diff --git a/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/arcSettings.json b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/arcSettings.json
new file mode 100644
index 000000000000..f3c927c15490
--- /dev/null
+++ b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/arcSettings.json
@@ -0,0 +1,379 @@
+{
+  "swagger": "2.0",
+  "info": {
+    "version": "2021-09-01",
+    "title": "AzureStackHCI",
+    "description": "Azure Stack HCI management service"
+  },
+  "host": "management.azure.com",
+  "schemes": [
+    "https"
+  ],
+  "consumes": [
+    "application/json"
+  ],
+  "produces": [
+    "application/json"
+  ],
+  "security": [
+    {
+      "azure_auth": [
+        "user_impersonation"
+      ]
+    }
+  ],
+  "securityDefinitions": {
+    "azure_auth": {
+      "type": "oauth2",
+      "authorizationUrl": "https://login.microsoftonline.com/common/oauth2/authorize",
+      "flow": "implicit",
+      "description": "Azure Active Directory OAuth2 Flow",
+      "scopes": {
+        "user_impersonation": "impersonate your user account"
+      }
+    }
+  },
+  "paths": {
+    "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.AzureStackHCI/clusters/{clusterName}/arcSettings": {
+      "get": {
+        "operationId": "ArcSettings_ListByCluster",
+        "description": "Get ArcSetting resources of HCI Cluster.",
+        "parameters": [
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/SubscriptionIdParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/ResourceGroupNameParameter"
+          },
+          {
+            "$ref": "#/parameters/ClusterNameParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/ApiVersionParameter"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK",
+            "schema": {
+              "$ref": "#/definitions/ArcSettingList"
+            }
+          },
+          "default": {
+            "description": "Error response describing why the operation failed.",
+            "schema": {
+              "$ref": "../../../../../common-types/resource-management/v2/types.json#/definitions/ErrorResponse"
+            }
+          }
+        },
+        "x-ms-examples": {
+          "List ArcSetting resources by HCI Cluster": {
+            "$ref": "./examples/ListArcSettingsByCluster.json"
+          }
+        },
+        "x-ms-pageable": {
+          "nextLinkName": "nextLink"
+        }
+      }
+    },
+    "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.AzureStackHCI/clusters/{clusterName}/arcSettings/{arcSettingName}": {
+      "get": {
+        "operationId": "ArcSettings_Get",
+        "description": "Get ArcSetting resource details of HCI Cluster.",
+        "parameters": [
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/SubscriptionIdParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/ResourceGroupNameParameter"
+          },
+          {
+            "$ref": "#/parameters/ClusterNameParameter"
+          },
+          {
+            "$ref": "#/parameters/ArcSettingNameParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/ApiVersionParameter"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK",
+            "schema": {
+              "$ref": "#/definitions/ArcSetting"
+            }
+          },
+          "default": {
+            "description": "Error response describing why the operation failed.",
+            "schema": {
+              "$ref": "../../../../../common-types/resource-management/v2/types.json#/definitions/ErrorResponse"
+            }
+          }
+        },
+        "x-ms-examples": {
+          "Get ArcSetting": {
+            "$ref": "./examples/GetArcSetting.json"
+          }
+        }
+      },
+      "put": {
+        "operationId": "ArcSettings_Create",
+        "description": "Create ArcSetting for HCI cluster.",
+        "parameters": [
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/SubscriptionIdParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/ResourceGroupNameParameter"
+          },
+          {
+            "$ref": "#/parameters/ClusterNameParameter"
+          },
+          {
+            "$ref": "#/parameters/ArcSettingNameParameter"
+          },
+          {
+            "name": "arcSetting",
+            "in": "body",
+            "required": true,
+            "schema": {
+              "$ref": "#/definitions/ArcSetting"
+            },
+            "description": "Parameters supplied to the Create ArcSetting resource for this HCI cluster."
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/ApiVersionParameter"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK",
+            "schema": {
+              "$ref": "#/definitions/ArcSetting"
+            }
+          },
+          "default": {
+            "description": "Error response describing why the operation failed.",
+            "schema": {
+              "$ref": "../../../../../common-types/resource-management/v2/types.json#/definitions/ErrorResponse"
+            }
+          }
+        },
+        "x-ms-examples": {
+          "Create ArcSetting": {
+            "$ref": "./examples/PutArcSetting.json"
+          }
+        }
+      },
+      "delete": {
+        "operationId": "ArcSettings_Delete",
+        "description": "Delete ArcSetting resource details of HCI Cluster.",
+        "parameters": [
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/SubscriptionIdParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/ResourceGroupNameParameter"
+          },
+          {
+            "$ref": "#/parameters/ClusterNameParameter"
+          },
+          {
+            "$ref": "#/parameters/ArcSettingNameParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/ApiVersionParameter"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK"
+          },
+          "202": {
+            "description": "OK"
+          },
+          "204": {
+            "description": "No content"
+          },
+          "default": {
+            "description": "Error response describing why the operation failed.",
+            "schema": {
+              "$ref": "../../../../../common-types/resource-management/v2/types.json#/definitions/ErrorResponse"
+            }
+          }
+        },
+        "x-ms-long-running-operation": true,
+        "x-ms-long-running-operation-options": {
+          "final-state-via": "azure-async-operation"
+        },
+        "x-ms-examples": {
+          "Delete ArcSetting": {
+            "$ref": "./examples/DeleteArcSetting.json"
+          }
+        }
+      }
+    }
+  },
+  "definitions": {
+    "ArcSettingList": {
+      "description": "List of ArcSetting proxy resources for the HCI cluster.",
+      "type": "object",
+      "properties": {
+        "value": {
+          "description": "List of ArcSetting proxy resources.",
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/ArcSetting"
+          },
+          "readOnly": true
+        },
+        "nextLink": {
+          "description": "Link to the next set of results.",
+          "type": "string",
+          "readOnly": true
+        }
+      }
+    },
+    "ArcSetting": {
+      "description": "ArcSetting details.",
+      "type": "object",
+      "allOf": [
+        {
+          "$ref": "../../../../../common-types/resource-management/v2/types.json#/definitions/ProxyResource"
+        }
+      ],
+      "properties": {
+        "systemData": {
+          "description": "System data of ArcSetting resource",
+          "$ref": "../../../../../common-types/resource-management/v2/types.json#/definitions/systemData",
+          "x-ms-client-flatten": true,
+          "readOnly": true
+        },
+        "properties": {
+          "description": "ArcSetting properties.",
+          "$ref": "#/definitions/ArcSettingProperties",
+          "x-ms-client-flatten": true
+        }
+      }
+    },
+    "ArcSettingProperties": {
+      "description": "ArcSetting properties.",
+      "type": "object",
+      "properties": {
+        "provisioningState": {
+          "description": "Provisioning state of the ArcSetting proxy resource.",
+          "type": "string",
+          "enum": [
+            "Succeeded",
+            "Failed",
+            "Canceled",
+            "Accepted",
+            "Provisioning"
+          ],
+          "x-ms-enum": {
+            "name": "ProvisioningState",
+            "modelAsString": true
+          },
+          "readOnly": true
+        },
+        "arcInstanceResourceGroup": {
+          "description": "The resource group that hosts the Arc agents, ie. Hybrid Compute Machine resources.",
+          "type": "string",
+          "readOnly": true
+        },
+        "aggregateState": {
+          "description": "Aggregate state of Arc agent across the nodes in this HCI cluster.",
+          "type": "string",
+          "enum": [
+            "NotSpecified",
+            "Error",
+            "Succeeded",
+            "Canceled",
+            "Failed",
+            "Connected",
+            "Disconnected",
+            "Deleted",
+            "Creating",
+            "Updating",
+            "Deleting",
+            "Moving",
+            "PartiallySucceeded",
+            "PartiallyConnected",
+            "InProgress"
+          ],
+          "x-ms-enum": {
+            "name": "ArcSettingAggregateState",
+            "modelAsString": true
+          },
+          "readOnly": true
+        },
+        "perNodeDetails": {
+          "description": "State of Arc agent in each of the nodes.",
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/PerNodeState"
+          },
+          "readOnly": true
+        }
+      }
+    },
+    "PerNodeState": {
+      "description": "Status of Arc agent for a particular node in HCI Cluster.",
+      "type": "object",
+      "properties": {
+        "name": {
+          "type": "string",
+          "readOnly": true,
+          "description": "Name of the Node in HCI Cluster"
+        },
+        "arcInstance": {
+          "description": "Fully qualified resource ID for the Arc agent of this node.",
+          "type": "string",
+          "readOnly": true
+        },
+        "state": {
+          "description": "State of Arc agent in this node.",
+          "type": "string",
+          "enum": [
+            "NotSpecified",
+            "Error",
+            "Succeeded",
+            "Canceled",
+            "Failed",
+            "Connected",
+            "Disconnected",
+            "Deleted",
+            "Creating",
+            "Updating",
+            "Deleting",
+            "Moving"
+          ],
+          "x-ms-enum": {
+            "name": "NodeArcState",
+            "modelAsString": true
+          },
+          "readOnly": true
+        }
+      }
+    }
+  },
+  "parameters": {
+    "ClusterNameParameter": {
+      "name": "clusterName",
+      "in": "path",
+      "required": true,
+      "type": "string",
+      "description": "The name of the cluster.",
+      "x-ms-parameter-location": "method"
+    },
+    "ArcSettingNameParameter": {
+      "name": "arcSettingName",
+      "in": "path",
+      "required": true,
+      "type": "string",
+      "description": "The name of the proxy resource holding details of HCI ArcSetting information.",
+      "x-ms-parameter-location": "method"
+    }
+  }
+}
diff --git a/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/clusters.json b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/clusters.json
new file mode 100644
index 000000000000..2f74ec39bcd1
--- /dev/null
+++ b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/clusters.json
@@ -0,0 +1,643 @@
+{
+  "swagger": "2.0",
+  "info": {
+    "version": "2021-09-01",
+    "title": "AzureStackHCI",
+    "description": "Azure Stack HCI management service"
+  },
+  "host": "management.azure.com",
+  "schemes": [
+    "https"
+  ],
+  "consumes": [
+    "application/json"
+  ],
+  "produces": [
+    "application/json"
+  ],
+  "security": [
+    {
+      "azure_auth": [
+        "user_impersonation"
+      ]
+    }
+  ],
+  "securityDefinitions": {
+    "azure_auth": {
+      "type": "oauth2",
+      "authorizationUrl": "https://login.microsoftonline.com/common/oauth2/authorize",
+      "flow": "implicit",
+      "description": "Azure Active Directory OAuth2 Flow",
+      "scopes": {
+        "user_impersonation": "impersonate your user account"
+      }
+    }
+  },
+  "paths": {
+    "/subscriptions/{subscriptionId}/providers/Microsoft.AzureStackHCI/clusters": {
+      "get": {
+        "tags": [
+          "Clusters"
+        ],
+        "operationId": "Clusters_ListBySubscription",
+        "x-ms-examples": {
+          "List clusters in a given subscription": {
+            "$ref": "./examples/ListClustersBySubscription.json"
+          }
+        },
+        "description": "List all HCI clusters in a subscription.",
+        "parameters": [
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/SubscriptionIdParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/ApiVersionParameter"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK",
+            "schema": {
+              "$ref": "#/definitions/ClusterList"
+            }
+          },
+          "default": {
+            "description": "Error response describing why the operation failed.",
+            "schema": {
+              "$ref": "../../../../../common-types/resource-management/v2/types.json#/definitions/ErrorResponse"
+            }
+          }
+        },
+        "x-ms-pageable": {
+          "nextLinkName": "nextLink"
+        }
+      }
+    },
+    "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.AzureStackHCI/clusters": {
+      "get": {
+        "tags": [
+          "Clusters"
+        ],
+        "operationId": "Clusters_ListByResourceGroup",
+        "x-ms-examples": {
+          "List clusters in a given resource group": {
+            "$ref": "./examples/ListClustersByResourceGroup.json"
+          }
+        },
+        "description": "List all HCI clusters in a resource group.",
+        "parameters": [
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/SubscriptionIdParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/ResourceGroupNameParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/ApiVersionParameter"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK",
+            "schema": {
+              "$ref": "#/definitions/ClusterList"
+            }
+          },
+          "default": {
+            "description": "Error response describing why the operation failed.",
+            "schema": {
+              "$ref": "../../../../../common-types/resource-management/v2/types.json#/definitions/ErrorResponse"
+            }
+          }
+        },
+        "x-ms-pageable": {
+          "nextLinkName": "nextLink"
+        }
+      }
+    },
+    "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.AzureStackHCI/clusters/{clusterName}": {
+      "get": {
+        "tags": [
+          "Clusters"
+        ],
+        "operationId": "Clusters_Get",
+        "x-ms-examples": {
+          "Get cluster": {
+            "$ref": "./examples/GetCluster.json"
+          }
+        },
+        "description": "Get HCI cluster.",
+        "parameters": [
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/SubscriptionIdParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/ResourceGroupNameParameter"
+          },
+          {
+            "$ref": "#/parameters/ClusterNameParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/ApiVersionParameter"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK",
+            "schema": {
+              "$ref": "#/definitions/Cluster"
+            }
+          },
+          "default": {
+            "description": "Error response describing why the operation failed.",
+            "schema": {
+              "$ref": "../../../../../common-types/resource-management/v2/types.json#/definitions/ErrorResponse"
+            }
+          }
+        }
+      },
+      "put": {
+        "tags": [
+          "Clusters"
+        ],
+        "operationId": "Clusters_Create",
+        "x-ms-examples": {
+          "Create cluster": {
+            "$ref": "./examples/CreateCluster.json"
+          }
+        },
+        "description": "Create an HCI cluster.",
+        "parameters": [
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/SubscriptionIdParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/ResourceGroupNameParameter"
+          },
+          {
+            "$ref": "#/parameters/ClusterNameParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/ApiVersionParameter"
+          },
+          {
+            "name": "cluster",
+            "in": "body",
+            "description": "Details of the HCI cluster.",
+            "required": true,
+            "schema": {
+              "$ref": "#/definitions/Cluster"
+            }
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK",
+            "schema": {
+              "$ref": "#/definitions/Cluster"
+            }
+          },
+          "default": {
+            "description": "Error response describing why the operation failed.",
+            "schema": {
+              "$ref": "../../../../../common-types/resource-management/v2/types.json#/definitions/ErrorResponse"
+            }
+          }
+        }
+      },
+      "patch": {
+        "tags": [
+          "Clusters"
+        ],
+        "operationId": "Clusters_Update",
+        "x-ms-examples": {
+          "Update cluster": {
+            "$ref": "./examples/UpdateCluster.json"
+          }
+        },
+        "description": "Update an HCI cluster.",
+        "parameters": [
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/SubscriptionIdParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/ResourceGroupNameParameter"
+          },
+          {
+            "$ref": "#/parameters/ClusterNameParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/ApiVersionParameter"
+          },
+          {
+            "name": "cluster",
+            "in": "body",
+            "description": "Details of the HCI cluster.",
+            "required": true,
+            "schema": {
+              "$ref": "#/definitions/ClusterPatch"
+            }
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK",
+            "schema": {
+              "$ref": "#/definitions/Cluster"
+            }
+          },
+          "default": {
+            "description": "Error response describing why the operation failed.",
+            "schema": {
+              "$ref": "../../../../../common-types/resource-management/v2/types.json#/definitions/ErrorResponse"
+            }
+          }
+        }
+      },
+      "delete": {
+        "tags": [
+          "Clusters"
+        ],
+        "operationId": "Clusters_Delete",
+        "x-ms-examples": {
+          "Delete cluster": {
+            "$ref": "./examples/DeleteCluster.json"
+          }
+        },
+        "description": "Delete an HCI cluster.",
+        "parameters": [
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/SubscriptionIdParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/ResourceGroupNameParameter"
+          },
+          {
+            "$ref": "#/parameters/ClusterNameParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/ApiVersionParameter"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK"
+          },
+          "204": {
+            "description": "No content"
+          },
+          "default": {
+            "description": "Error response describing why the operation failed.",
+            "schema": {
+              "$ref": "../../../../../common-types/resource-management/v2/types.json#/definitions/ErrorResponse"
+            }
+          }
+        }
+      }
+    }
+  },
+  "definitions": {
+    "ClusterList": {
+      "description": "List of clusters.",
+      "type": "object",
+      "properties": {
+        "value": {
+          "description": "List of clusters.",
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/Cluster"
+          }
+        },
+        "nextLink": {
+          "description": "Link to the next set of results.",
+          "type": "string",
+          "readOnly": true
+        }
+      }
+    },
+    "Cluster": {
+      "description": "Cluster details.",
+      "type": "object",
+      "allOf": [
+        {
+          "$ref": "../../../../../common-types/resource-management/v2/types.json#/definitions/TrackedResource"
+        }
+      ],
+      "properties": {
+        "systemData": {
+          "description": "System data of Cluster resource",
+          "$ref": "../../../../../common-types/resource-management/v2/types.json#/definitions/systemData",
+          "x-ms-client-flatten": true,
+          "readOnly": true
+        },
+        "properties": {
+          "description": "Cluster properties.",
+          "$ref": "#/definitions/ClusterProperties",
+          "x-ms-client-flatten": true
+        }
+      }
+    },
+    "ClusterPatch": {
+      "description": "Cluster details to update.",
+      "type": "object",
+      "properties": {
+        "tags": {
+          "description": "Resource tags.",
+          "type": "object",
+          "additionalProperties": {
+            "type": "string"
+          }
+        },
+        "properties": {
+          "description": "Cluster properties.",
+          "$ref": "#/definitions/ClusterPatchProperties",
+          "x-ms-client-flatten": true
+        }
+      }
+    },
+    "ClusterProperties": {
+      "description": "Cluster properties.",
+      "type": "object",
+      "required": [
+        "aadClientId",
+        "aadTenantId"
+      ],
+      "properties": {
+        "provisioningState": {
+          "description": "Provisioning state.",
+          "type": "string",
+          "enum": [
+            "Succeeded",
+            "Failed",
+            "Canceled",
+            "Accepted",
+            "Provisioning"
+          ],
+          "x-ms-enum": {
+            "name": "ProvisioningState",
+            "modelAsString": true
+          },
+          "readOnly": true
+        },
+        "status": {
+          "description": "Status of the cluster agent.",
+          "type": "string",
+          "enum": [
+            "NotYetRegistered",
+            "ConnectedRecently",
+            "NotConnectedRecently",
+            "Disconnected",
+            "Error"
+          ],
+          "x-ms-enum": {
+            "name": "Status",
+            "modelAsString": true
+          },
+          "readOnly": true
+        },
+        "cloudId": {
+          "description": "Unique, immutable resource id.",
+          "type": "string",
+          "readOnly": true
+        },
+        "cloudManagementEndpoint": {
+          "description": "Endpoint configured for management from the Azure portal.",
+          "type": "string"
+        },
+        "aadClientId": {
+          "description": "App id of cluster AAD identity.",
+          "type": "string"
+        },
+        "aadTenantId": {
+          "description": "Tenant id of cluster AAD identity.",
+          "type": "string"
+        },
+        "desiredProperties": {
+          "description": "Desired properties of the cluster.",
+          "$ref": "#/definitions/ClusterDesiredProperties"
+        },
+        "reportedProperties": {
+          "description": "Properties reported by cluster agent.",
+          "$ref": "#/definitions/ClusterReportedProperties",
+          "readOnly": true
+        },
+        "trialDaysRemaining": {
+          "description": "Number of days remaining in the trial period.",
+          "type": "number",
+          "readOnly": true
+        },
+        "billingModel": {
+          "description": "Type of billing applied to the resource.",
+          "type": "string",
+          "readOnly": true
+        },
+        "registrationTimestamp": {
+          "description": "First cluster sync timestamp.",
+          "type": "string",
+          "format": "date-time",
+          "readOnly": true
+        },
+        "lastSyncTimestamp": {
+          "description": "Most recent cluster sync timestamp.",
+          "type": "string",
+          "format": "date-time",
+          "readOnly": true
+        },
+        "lastBillingTimestamp": {
+          "description": "Most recent billing meter timestamp.",
+          "type": "string",
+          "format": "date-time",
+          "readOnly": true
+        }
+      }
+    },
+    "ClusterPatchProperties": {
+      "description": "Cluster properties.",
+      "type": "object",
+      "properties": {
+        "cloudManagementEndpoint": {
+          "description": "Endpoint configured for management from the Azure portal",
+          "type": "string"
+        },
+        "aadClientId": {
+          "description": "App id of cluster AAD identity.",
+          "type": "string"
+        },
+        "aadTenantId": {
+          "description": "Tenant id of cluster AAD identity.",
+          "type": "string"
+        },
+        "desiredProperties": {
+          "description": "Desired properties of the cluster.",
+          "$ref": "#/definitions/ClusterDesiredProperties"
+        }
+      }
+    },
+    "ClusterDesiredProperties": {
+      "description": "Desired properties of the cluster.",
+      "type": "object",
+      "properties": {
+        "windowsServerSubscription": {
+          "description": "Desired state of Windows Server Subscription.",
+          "type": "string",
+          "enum": [
+            "Disabled",
+            "Enabled"
+          ],
+          "x-ms-enum": {
+            "name": "WindowsServerSubscription",
+            "modelAsString": true
+          }
+        },
+        "diagnosticLevel": {
+          "description": "Desired level of diagnostic data emitted by the cluster.",
+          "type": "string",
+          "enum": [
+            "Off",
+            "Required",
+            "RequiredAndOptional"
+          ],
+          "x-ms-enum": {
+            "name": "DiagnosticLevel",
+            "modelAsString": true
+          }
+        }
+      }
+    },
+    "ClusterReportedProperties": {
+      "description": "Properties reported by cluster agent.",
+      "type": "object",
+      "properties": {
+        "clusterName": {
+          "description": "Name of the on-prem cluster connected to this resource.",
+          "type": "string",
+          "readOnly": true
+        },
+        "clusterId": {
+          "description": "Unique id generated by the on-prem cluster.",
+          "type": "string",
+          "readOnly": true
+        },
+        "clusterVersion": {
+          "description": "Version of the cluster software.",
+          "type": "string",
+          "readOnly": true
+        },
+        "nodes": {
+          "description": "List of nodes reported by the cluster.",
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/ClusterNode"
+          },
+          "readOnly": true
+        },
+        "lastUpdated": {
+          "description": "Last time the cluster reported the data.",
+          "type": "string",
+          "format": "date-time",
+          "readOnly": true
+        },
+        "imdsAttestation": {
+          "description": "IMDS attestation status of the cluster.",
+          "type": "string",
+          "enum": [
+            "Disabled",
+            "Enabled"
+          ],
+          "x-ms-enum": {
+            "name": "ImdsAttestation",
+            "modelAsString": true
+          },
+          "readOnly": true
+        },
+        "diagnosticLevel": {
+          "description": "Level of diagnostic data emitted by the cluster.",
+          "type": "string",
+          "enum": [
+            "Off",
+            "Required",
+            "RequiredAndOptional"
+          ],
+          "x-ms-enum": {
+            "name": "DiagnosticLevel",
+            "modelAsString": true
+          }
+        }
+      }
+    },
+    "ClusterNode": {
+      "description": "Cluster node details.",
+      "type": "object",
+      "properties": {
+        "name": {
+          "description": "Name of the cluster node.",
+          "type": "string",
+          "readOnly": true
+        },
+        "id": {
+          "description": "Id of the node in the cluster.",
+          "type": "number",
+          "readOnly": true
+        },
+        "windowsServerSubscription": {
+          "description": "State of Windows Server Subscription.",
+          "type": "string",
+          "enum": [
+            "Disabled",
+            "Enabled"
+          ],
+          "x-ms-enum": {
+            "name": "WindowsServerSubscription",
+            "modelAsString": true
+          },
+          "readOnly": true
+        },
+        "manufacturer": {
+          "description": "Manufacturer of the cluster node hardware.",
+          "type": "string",
+          "readOnly": true
+        },
+        "model": {
+          "description": "Model name of the cluster node hardware.",
+          "type": "string",
+          "readOnly": true
+        },
+        "osName": {
+          "description": "Operating system running on the cluster node.",
+          "type": "string",
+          "readOnly": true
+        },
+        "osVersion": {
+          "description": "Version of the operating system running on the cluster node.",
+          "type": "string",
+          "readOnly": true
+        },
+        "serialNumber": {
+          "description": "Immutable id of the cluster node.",
+          "type": "string",
+          "readOnly": true
+        },
+        "coreCount": {
+          "description": "Number of physical cores on the cluster node.",
+          "type": "number",
+          "readOnly": true
+        },
+        "memoryInGiB": {
+          "description": "Total available memory on the cluster node (in GiB).",
+          "type": "number",
+          "readOnly": true
+        }
+      }
+    }
+  },
+  "parameters": {
+    "ClusterNameParameter": {
+      "name": "clusterName",
+      "in": "path",
+      "required": true,
+      "type": "string",
+      "description": "The name of the cluster.",
+      "x-ms-parameter-location": "method"
+    }
+  }
+}
diff --git a/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/CreateCluster.json b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/CreateCluster.json
new file mode 100644
index 000000000000..18fbec379d10
--- /dev/null
+++ b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/CreateCluster.json
@@ -0,0 +1,50 @@
+{
+  "parameters": {
+    "subscriptionId": "fd3c3665-1729-4b7b-9a38-238e83b0f98b",
+    "resourceGroupName": "test-rg",
+    "clusterName": "myCluster",
+    "api-version": "2021-09-01",
+    "cluster": {
+      "location": "East US",
+      "properties": {
+        "cloudManagementEndpoint": "https://98294836-31be-4668-aeae-698667faf99b.waconazure.com",
+        "aadClientId": "24a6e53d-04e5-44d2-b7cc-1b732a847dfc",
+        "aadTenantId": "7e589cc1-a8b6-4dff-91bd-5ec0fa18db94"
+      }
+    }
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "id": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/test-rg/providers/Microsoft.AzureStackHCI/clusters/myCluster",
+        "name": "myCluster",
+        "type": "Microsoft.AzureStackHCI/clusters",
+        "location": "East US",
+        "tags": {},
+        "systemData": {
+          "createdBy": "user1",
+          "createdByType": "User",
+          "createdAt": "2020-01-01T17:18:19.1234567Z",
+          "lastModifiedBy": "user2",
+          "lastModifiedByType": "User",
+          "lastModifiedAt": "2020-01-02T17:18:19.1234567Z"
+        },
+        "properties": {
+          "provisioningState": "Succeeded",
+          "status": "NotYetRegistered",
+          "cloudId": "a3c0468f-e38e-4dda-ac48-817f620536f0",
+          "cloudManagementEndpoint": "https://98294836-31be-4668-aeae-698667faf99b.waconazure.com",
+          "aadClientId": "24a6e53d-04e5-44d2-b7cc-1b732a847dfc",
+          "aadTenantId": "7e589cc1-a8b6-4dff-91bd-5ec0fa18db94",
+          "desiredProperties": {
+            "windowsServerSubscription": "Disabled",
+            "diagnosticLevel": "Off"
+          },
+          "reportedProperties": {},
+          "trialDaysRemaining": 30,
+          "billingModel": "Trial"
+        }
+      }
+    }
+  }
+}
diff --git a/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/DeleteArcSetting.json b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/DeleteArcSetting.json
new file mode 100644
index 000000000000..b54012c9e1e6
--- /dev/null
+++ b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/DeleteArcSetting.json
@@ -0,0 +1,14 @@
+{
+  "parameters": {
+    "subscriptionId": "fd3c3665-1729-4b7b-9a38-238e83b0f98b",
+    "resourceGroupName": "test-rg",
+    "clusterName": "myCluster",
+    "arcSettingName": "default",
+    "api-version": "2021-09-01"
+  },
+  "responses": {
+    "200": {},
+    "202": {},
+    "204": {}
+  }
+}
diff --git a/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/DeleteCluster.json b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/DeleteCluster.json
new file mode 100644
index 000000000000..23f0d48e58e8
--- /dev/null
+++ b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/DeleteCluster.json
@@ -0,0 +1,12 @@
+{
+  "parameters": {
+    "subscriptionId": "fd3c3665-1729-4b7b-9a38-238e83b0f98b",
+    "resourceGroupName": "test-rg",
+    "clusterName": "myCluster",
+    "api-version": "2021-09-01"
+  },
+  "responses": {
+    "200": {},
+    "204": {}
+  }
+}
diff --git a/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/DeleteExtension.json b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/DeleteExtension.json
new file mode 100644
index 000000000000..e20db81e58d5
--- /dev/null
+++ b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/DeleteExtension.json
@@ -0,0 +1,15 @@
+{
+  "parameters": {
+    "subscriptionId": "fd3c3665-1729-4b7b-9a38-238e83b0f98b",
+    "resourceGroupName": "test-rg",
+    "clusterName": "myCluster",
+    "arcSettingName": "default",
+    "extensionName": "MicrosoftMonitoringAgent",
+    "api-version": "2021-09-01"
+  },
+  "responses": {
+    "200": {},
+    "202": {},
+    "204": {}
+  }
+}
diff --git a/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/GetArcSetting.json b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/GetArcSetting.json
new file mode 100644
index 000000000000..7237a7944201
--- /dev/null
+++ b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/GetArcSetting.json
@@ -0,0 +1,42 @@
+{
+  "parameters": {
+    "subscriptionId": "fd3c3665-1729-4b7b-9a38-238e83b0f98b",
+    "resourceGroupName": "test-rg",
+    "clusterName": "myCluster",
+    "arcSettingName": "default",
+    "api-version": "2021-09-01"
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "id": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/test-rg/providers/Microsoft.AzureStackHCI/clusters/myCluster/arcSettings/default",
+        "type": "Microsoft.AzureStackHCI/clusters/arcSettings",
+        "systemData": {
+          "createdBy": "user1",
+          "createdByType": "User",
+          "createdAt": "2021-01-01T17:18:19.1234567Z",
+          "lastModifiedBy": "user2",
+          "lastModifiedByType": "User",
+          "lastModifiedAt": "2021-01-02T17:18:19.1234567Z"
+        },
+        "properties": {
+          "provisioningState": "Succeeded",
+          "arcInstanceResourceGroup": "ArcInstance-rg",
+          "aggregateState": "PartiallyConnected",
+          "perNodeDetails": [
+            {
+              "name": "Node-1",
+              "arcInstance": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/ArcInstance-rg/providers/Microsoft.HybridCompute/machines/Node-1",
+              "state": "Connected"
+            },
+            {
+              "name": "Node-2",
+              "arcInstance": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/ArcInstance-rg/providers/Microsoft.HybridCompute/machines/Node-2",
+              "state": "Disconnected"
+            }
+          ]
+        }
+      }
+    }
+  }
+}
diff --git a/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/GetCluster.json b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/GetCluster.json
new file mode 100644
index 000000000000..e23d5fc801d3
--- /dev/null
+++ b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/GetCluster.json
@@ -0,0 +1,90 @@
+{
+  "parameters": {
+    "subscriptionId": "fd3c3665-1729-4b7b-9a38-238e83b0f98b",
+    "resourceGroupName": "test-rg",
+    "clusterName": "myCluster",
+    "api-version": "2021-09-01"
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "id": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/test-rg/providers/Microsoft.AzureStackHCI/clusters/myCluster",
+        "name": "myCluster",
+        "type": "Microsoft.AzureStackHCI/clusters",
+        "location": "East US",
+        "tags": {},
+        "systemData": {
+          "createdBy": "user1",
+          "createdByType": "User",
+          "createdAt": "2020-01-01T17:18:19.1234567Z",
+          "lastModifiedBy": "user2",
+          "lastModifiedByType": "User",
+          "lastModifiedAt": "2020-01-02T17:18:19.1234567Z"
+        },
+        "properties": {
+          "provisioningState": "Succeeded",
+          "status": "ConnectedRecently",
+          "cloudId": "a3c0468f-e38e-4dda-ac48-817f620536f0",
+          "cloudManagementEndpoint": "https://98294836-31be-4668-aeae-698667faf99b.waconazure.com",
+          "aadClientId": "24a6e53d-04e5-44d2-b7cc-1b732a847dfc",
+          "aadTenantId": "7e589cc1-a8b6-4dff-91bd-5ec0fa18db94",
+          "desiredProperties": {
+            "windowsServerSubscription": "Enabled",
+            "diagnosticLevel": "Required"
+          },
+          "reportedProperties": {
+            "clusterName": "cluster1",
+            "clusterId": "a76ac23a-1819-4e82-9410-e3e4ec3d1425",
+            "clusterVersion": "10.0.17777",
+            "nodes": [
+              {
+                "name": "Node1",
+                "id": 1,
+                "windowsServerSubscription": "Enabled",
+                "manufacturer": "Dell Inc.",
+                "model": "EMC AX740",
+                "osName": "Azure Stack HCI",
+                "osVersion": "10.0.17777.1061",
+                "serialNumber": "Q45CZC3",
+                "coreCount": 8,
+                "memoryInGiB": 128
+              },
+              {
+                "name": "Node2",
+                "id": 2,
+                "windowsServerSubscription": "Enabled",
+                "manufacturer": "Dell Inc.",
+                "model": "EMC AX740",
+                "osName": "Azure Stack HCI",
+                "osVersion": "10.0.17777.1061",
+                "serialNumber": "Q44BSC3",
+                "coreCount": 8,
+                "memoryInGiB": 128
+              },
+              {
+                "name": "Node3",
+                "id": 3,
+                "windowsServerSubscription": "Enabled",
+                "manufacturer": "Dell Inc.",
+                "model": "EMC AX740",
+                "osName": "Azure Stack HCI",
+                "osVersion": "10.0.17777.1061",
+                "serialNumber": "Q44RFC3",
+                "coreCount": 16,
+                "memoryInGiB": 256
+              }
+            ],
+            "lastUpdated": "2020-03-11T19:24:42.1946017Z",
+            "imdsAttestation": "Disabled",
+            "diagnosticLevel": "Required"
+          },
+          "trialDaysRemaining": 30,
+          "billingModel": "Trial",
+          "registrationTimestamp": "2020-03-11T20:44:32.5625121Z",
+          "lastSyncTimestamp": "2020-03-11T20:44:32.5625121Z",
+          "lastBillingTimestamp": "2020-03-12T08:12:55.2312022Z"
+        }
+      }
+    }
+  }
+}
diff --git a/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/GetExtension.json b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/GetExtension.json
new file mode 100644
index 000000000000..75f14c996485
--- /dev/null
+++ b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/GetExtension.json
@@ -0,0 +1,52 @@
+{
+  "parameters": {
+    "subscriptionId": "fd3c3665-1729-4b7b-9a38-238e83b0f98b",
+    "resourceGroupName": "test-rg",
+    "clusterName": "myCluster",
+    "arcSettingName": "default",
+    "extensionName": "MicrosoftMonitoringAgent",
+    "api-version": "2021-09-01"
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "id": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/test-rg/providers/Microsoft.AzureStackHCI/clusters/myCluster/arcSettings/default/extensions/MicrosoftMonitoringAgent",
+        "name": "MicrosoftMonitoringAgent",
+        "type": "Microsoft.AzureStackHCI/clusters/arcSettings/extensions",
+        "systemData": {
+          "createdBy": "user1",
+          "createdByType": "User",
+          "createdAt": "2021-01-01T17:18:19.1234567Z",
+          "lastModifiedBy": "user2",
+          "lastModifiedByType": "User",
+          "lastModifiedAt": "2021-01-02T17:18:19.1234567Z"
+        },
+        "properties": {
+          "provisioningState": "Succeeded",
+          "extensionParameters": {
+            "publisher": "Microsoft.Compute",
+            "type": "string",
+            "typeHandlerVersion": "1.10.3",
+            "autoUpgradeMinorVersion": false,
+            "settings": {
+              "workspaceId": "xx"
+            }
+          },
+          "aggregateState": "PartiallySucceeded",
+          "perNodeExtensionDetails": [
+            {
+              "name": "Node-1",
+              "extension": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/ArcInstance-rg/providers/Microsoft.HybridCompute/machines/Node-1/Extensions/MicrosoftMonitoringAgent",
+              "state": "Succeeded"
+            },
+            {
+              "name": "Node-2",
+              "extension": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/ArcInstance-rg/providers/Microsoft.HybridCompute/machines/Node-2/Extensions/MicrosoftMonitoringAgent",
+              "state": "Failed"
+            }
+          ]
+        }
+      }
+    }
+  }
+}
diff --git a/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/ListArcSettingsByCluster.json b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/ListArcSettingsByCluster.json
new file mode 100644
index 000000000000..c35412be2cda
--- /dev/null
+++ b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/ListArcSettingsByCluster.json
@@ -0,0 +1,45 @@
+{
+  "parameters": {
+    "subscriptionId": "fd3c3665-1729-4b7b-9a38-238e83b0f98b",
+    "resourceGroupName": "test-rg",
+    "clusterName": "myCluster",
+    "api-version": "2021-09-01"
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "value": [
+          {
+            "id": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/test-rg/providers/Microsoft.AzureStackHCI/clusters/myCluster/arcSettings/default",
+            "type": "Microsoft.AzureStackHCI/clusters/arcSettings",
+            "systemData": {
+              "createdBy": "user1",
+              "createdByType": "User",
+              "createdAt": "2021-01-01T17:18:19.1234567Z",
+              "lastModifiedBy": "user2",
+              "lastModifiedByType": "User",
+              "lastModifiedAt": "2021-01-02T17:18:19.1234567Z"
+            },
+            "properties": {
+              "provisioningState": "Succeeded",
+              "arcInstanceResourceGroup": "ArcInstance-rg",
+              "aggregateState": "PartiallyConnected",
+              "perNodeDetails": [
+                {
+                  "name": "Node-1",
+                  "arcInstance": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/ArcInstance-rg/providers/Microsoft.HybridCompute/machines/Node-1",
+                  "state": "Connected"
+                },
+                {
+                  "name": "Node-2",
+                  "arcInstance": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/ArcInstance-rg/providers/Microsoft.HybridCompute/machines/Node-2",
+                  "state": "Disconnected"
+                }
+              ]
+            }
+          }
+        ]
+      }
+    }
+  }
+}
diff --git a/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/ListClustersByResourceGroup.json b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/ListClustersByResourceGroup.json
new file mode 100644
index 000000000000..1597fafb0f3c
--- /dev/null
+++ b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/ListClustersByResourceGroup.json
@@ -0,0 +1,123 @@
+{
+  "parameters": {
+    "subscriptionId": "fd3c3665-1729-4b7b-9a38-238e83b0f98b",
+    "resourceGroupName": "test-rg",
+    "api-version": "2021-09-01"
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "value": [
+          {
+            "id": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/test-rg/providers/Microsoft.AzureStackHCI/clusters/myCluster1",
+            "name": "myCluster1",
+            "type": "Microsoft.AzureStackHCI/clusters",
+            "location": "East US",
+            "tags": {},
+            "systemData": {
+              "createdBy": "user1",
+              "createdByType": "User",
+              "createdAt": "2020-01-01T17:18:19.1234567Z",
+              "lastModifiedBy": "user2",
+              "lastModifiedByType": "User",
+              "lastModifiedAt": "2020-01-02T17:18:19.1234567Z"
+            },
+            "properties": {
+              "provisioningState": "Succeeded",
+              "status": "NotYetRegistered",
+              "cloudId": "91c2b355-4826-4e96-9164-e3f26dcf1cdd",
+              "cloudManagementEndpoint": "https://98294836-31be-4668-aeae-698667faf99b.waconazure.com",
+              "aadClientId": "515da1c2-379e-49b4-9975-09e3e40c86be",
+              "aadTenantId": "7e589cc1-a8b6-4dff-91bd-5ec0fa18db94",
+              "desiredProperties": {
+                "windowsServerSubscription": "Enabled",
+                "diagnosticLevel": "Required"
+              },
+              "reportedProperties": {},
+              "trialDaysRemaining": 29,
+              "billingModel": "Trial"
+            }
+          },
+          {
+            "id": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/test-rg/providers/Microsoft.AzureStackHCI/clusters/myCluster2",
+            "name": "myCluster2",
+            "type": "Microsoft.AzureStackHCI/clusters",
+            "location": "East US",
+            "tags": {},
+            "systemData": {
+              "createdBy": "user1",
+              "createdByType": "User",
+              "createdAt": "2020-01-01T17:18:19.1234567Z",
+              "lastModifiedBy": "user2",
+              "lastModifiedByType": "User",
+              "lastModifiedAt": "2020-01-02T17:18:19.1234567Z"
+            },
+            "properties": {
+              "provisioningState": "Succeeded",
+              "status": "ConnectedRecently",
+              "cloudId": "a3c0468f-e38e-4dda-ac48-817f620536f0",
+              "cloudManagementEndpoint": "https://98294836-31be-4668-aeae-698667faf99b.waconazure.com",
+              "aadClientId": "24a6e53d-04e5-44d2-b7cc-1b732a847dfc",
+              "aadTenantId": "7e589cc1-a8b6-4dff-91bd-5ec0fa18db94",
+              "desiredProperties": {
+                "windowsServerSubscription": "Enabled",
+                "diagnosticLevel": "Required"
+              },
+              "reportedProperties": {
+                "clusterName": "cluster1",
+                "clusterId": "a76ac23a-1819-4e82-9410-e3e4ec3d1425",
+                "clusterVersion": "10.0.17777",
+                "nodes": [
+                  {
+                    "name": "Node1",
+                    "id": 0,
+                    "windowsServerSubscription": "Enabled",
+                    "manufacturer": "Dell Inc.",
+                    "model": "EMC AX740",
+                    "osName": "Azure Stack HCI",
+                    "osVersion": "10.0.17777.1061",
+                    "serialNumber": "Q45CZC3",
+                    "coreCount": 8,
+                    "memoryInGiB": 128
+                  },
+                  {
+                    "name": "Node2",
+                    "id": 1,
+                    "windowsServerSubscription": "Enabled",
+                    "manufacturer": "Dell Inc.",
+                    "model": "EMC AX740",
+                    "osName": "Azure Stack HCI",
+                    "osVersion": "10.0.17777.1061",
+                    "serialNumber": "Q44BSC3",
+                    "coreCount": 8,
+                    "memoryInGiB": 128
+                  },
+                  {
+                    "name": "Node3",
+                    "id": 2,
+                    "windowsServerSubscription": "Enabled",
+                    "manufacturer": "Dell Inc.",
+                    "model": "EMC AX740",
+                    "osName": "Azure Stack HCI",
+                    "osVersion": "10.0.17777.1061",
+                    "serialNumber": "Q44RFC3",
+                    "coreCount": 16,
+                    "memoryInGiB": 256
+                  }
+                ],
+                "lastUpdated": "2020-03-11T19:24:42.1946017Z",
+                "imdsAttestation": "Disabled",
+                "diagnosticLevel": "Required"
+              },
+              "trialDaysRemaining": 30,
+              "billingModel": "Trial",
+              "registrationTimestamp": "2020-03-11T20:44:32.5625121Z",
+              "lastSyncTimestamp": "2020-03-11T20:44:32.5625121Z",
+              "lastBillingTimestamp": "2020-03-12T08:12:55.2312022Z"
+            }
+          }
+        ]
+      }
+    }
+  }
+}
diff --git a/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/ListClustersBySubscription.json b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/ListClustersBySubscription.json
new file mode 100644
index 000000000000..4a9e8f887f3b
--- /dev/null
+++ b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/ListClustersBySubscription.json
@@ -0,0 +1,122 @@
+{
+  "parameters": {
+    "subscriptionId": "fd3c3665-1729-4b7b-9a38-238e83b0f98b",
+    "api-version": "2021-09-01"
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "value": [
+          {
+            "id": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/test-rg1/providers/Microsoft.AzureStackHCI/clusters/myCluster1",
+            "name": "myCluster1",
+            "type": "Microsoft.AzureStackHCI/clusters",
+            "location": "East US",
+            "tags": {},
+            "systemData": {
+              "createdBy": "user1",
+              "createdByType": "User",
+              "createdAt": "2020-01-01T17:18:19.1234567Z",
+              "lastModifiedBy": "user2",
+              "lastModifiedByType": "User",
+              "lastModifiedAt": "2020-01-02T17:18:19.1234567Z"
+            },
+            "properties": {
+              "provisioningState": "Succeeded",
+              "status": "NotYetRegistered",
+              "cloudId": "91c2b355-4826-4e96-9164-e3f26dcf1cdd",
+              "cloudManagementEndpoint": "https://98294836-31be-4668-aeae-698667faf99b.waconazure.com",
+              "aadClientId": "515da1c2-379e-49b4-9975-09e3e40c86be",
+              "aadTenantId": "7e589cc1-a8b6-4dff-91bd-5ec0fa18db94",
+              "desiredProperties": {
+                "windowsServerSubscription": "Enabled",
+                "diagnosticLevel": "Required"
+              },
+              "reportedProperties": {},
+              "trialDaysRemaining": 29,
+              "billingModel": "Trial"
+            }
+          },
+          {
+            "id": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/test-rg2/providers/Microsoft.AzureStackHCI/clusters/myCluster2",
+            "name": "myCluster2",
+            "type": "Microsoft.AzureStackHCI/clusters",
+            "location": "West US",
+            "tags": {},
+            "systemData": {
+              "createdBy": "user1",
+              "createdByType": "User",
+              "createdAt": "2020-01-01T17:18:19.1234567Z",
+              "lastModifiedBy": "user2",
+              "lastModifiedByType": "User",
+              "lastModifiedAt": "2020-01-02T17:18:19.1234567Z"
+            },
+            "properties": {
+              "provisioningState": "Succeeded",
+              "status": "ConnectedRecently",
+              "cloudId": "a3c0468f-e38e-4dda-ac48-817f620536f0",
+              "cloudManagementEndpoint": "https://98294836-31be-4668-aeae-698667faf99b.waconazure.com",
+              "aadClientId": "24a6e53d-04e5-44d2-b7cc-1b732a847dfc",
+              "aadTenantId": "7e589cc1-a8b6-4dff-91bd-5ec0fa18db94",
+              "desiredProperties": {
+                "windowsServerSubscription": "Enabled",
+                "diagnosticLevel": "Required"
+              },
+              "reportedProperties": {
+                "clusterName": "cluster1",
+                "clusterId": "a76ac23a-1819-4e82-9410-e3e4ec3d1425",
+                "clusterVersion": "10.0.17777",
+                "nodes": [
+                  {
+                    "name": "Node1",
+                    "id": 0,
+                    "windowsServerSubscription": "Enabled",
+                    "manufacturer": "Dell Inc.",
+                    "model": "EMC AX740",
+                    "osName": "Azure Stack HCI",
+                    "osVersion": "10.0.17777.1061",
+                    "serialNumber": "Q45CZC3",
+                    "coreCount": 8,
+                    "memoryInGiB": 128
+                  },
+                  {
+                    "name": "Node2",
+                    "id": 1,
+                    "windowsServerSubscription": "Enabled",
+                    "manufacturer": "Dell Inc.",
+                    "model": "EMC AX740",
+                    "osName": "Azure Stack HCI",
+                    "osVersion": "10.0.17777.1061",
+                    "serialNumber": "Q44BSC3",
+                    "coreCount": 8,
+                    "memoryInGiB": 128
+                  },
+                  {
+                    "name": "Node3",
+                    "id": 2,
+                    "windowsServerSubscription": "Enabled",
+                    "manufacturer": "Dell Inc.",
+                    "model": "EMC AX740",
+                    "osName": "Azure Stack HCI",
+                    "osVersion": "10.0.17777.1061",
+                    "serialNumber": "Q44RFC3",
+                    "coreCount": 16,
+                    "memoryInGiB": 256
+                  }
+                ],
+                "lastUpdated": "2020-03-11T19:24:42.1946017Z",
+                "imdsAttestation": "Disabled",
+                "diagnosticLevel": "Required"
+              },
+              "trialDaysRemaining": 30,
+              "billingModel": "Trial",
+              "registrationTimestamp": "2020-03-11T20:44:32.5625121Z",
+              "lastSyncTimestamp": "2020-03-11T20:44:32.5625121Z",
+              "lastBillingTimestamp": "2020-03-12T08:12:55.2312022Z"
+            }
+          }
+        ]
+      }
+    }
+  }
+}
diff --git a/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/ListExtensionsByArcSetting.json b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/ListExtensionsByArcSetting.json
new file mode 100644
index 000000000000..80791443fa19
--- /dev/null
+++ b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/ListExtensionsByArcSetting.json
@@ -0,0 +1,93 @@
+{
+  "parameters": {
+    "subscriptionId": "fd3c3665-1729-4b7b-9a38-238e83b0f98b",
+    "resourceGroupName": "test-rg",
+    "clusterName": "myCluster",
+    "arcSettingName": "default",
+    "api-version": "2021-09-01"
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "value": [
+          {
+            "id": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/test-rg/providers/Microsoft.AzureStackHCI/clusters/myCluster/arcSettings/default/extensions/MicrosoftMonitoringAgent",
+            "name": "MicrosoftMonitoringAgent",
+            "type": "Microsoft.AzureStackHCI/clusters/arcSettings/extensions",
+            "systemData": {
+              "createdBy": "user1",
+              "createdByType": "User",
+              "createdAt": "2021-01-01T17:18:19.1234567Z",
+              "lastModifiedBy": "user2",
+              "lastModifiedByType": "User",
+              "lastModifiedAt": "2021-01-02T17:18:19.1234567Z"
+            },
+            "properties": {
+              "provisioningState": "Succeeded",
+              "extensionParameters": {
+                "publisher": "Microsoft.Compute",
+                "type": "string",
+                "typeHandlerVersion": "1.10.3",
+                "autoUpgradeMinorVersion": false,
+                "settings": {
+                  "workspaceId": "xx"
+                }
+              },
+              "aggregateState": "PartiallyConnected",
+              "perNodeExtensionDetails": [
+                {
+                  "name": "Node-1",
+                  "extension": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/ArcInstance-rg/providers/Microsoft.HybridCompute/machines/Node-1/Extensions/MicrosoftMonitoringAgent",
+                  "state": "Connected"
+                },
+                {
+                  "name": "Node-2",
+                  "extension": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/ArcInstance-rg/providers/Microsoft.HybridCompute/machines/Node-2/Extensions/MicrosoftMonitoringAgent",
+                  "state": "Disconnected"
+                }
+              ]
+            }
+          },
+          {
+            "id": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/test-rg/providers/Microsoft.AzureStackHCI/clusters/myCluster/arcSettings/default/Extensions/SecurityExtension",
+            "name": "CustomScriptExtension",
+            "type": "Microsoft.AzureStackHCI/clusters/arcSettings/extensions",
+            "systemData": {
+              "createdBy": "user1",
+              "createdByType": "User",
+              "createdAt": "2021-01-01T17:18:19.1234567Z",
+              "lastModifiedBy": "user2",
+              "lastModifiedByType": "User",
+              "lastModifiedAt": "2021-01-02T17:18:19.1234567Z"
+            },
+            "properties": {
+              "provisioningState": "Succeeded",
+              "extensionParameters": {
+                "publisher": "Microsoft.CustomScriptExtension",
+                "type": "string",
+                "typeHandlerVersion": "1.10.3",
+                "autoUpgradeMinorVersion": false,
+                "settings": {
+                  "scriptLocation": "xx"
+                }
+              },
+              "aggregateState": "PartiallySucceeded",
+              "perNodeExtensionDetails": [
+                {
+                  "name": "Node-1",
+                  "extension": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/ArcInstance-rg/providers/Microsoft.HybridCompute/machines/Node-1/Extensions/SecurityExtension",
+                  "state": "Succeeded"
+                },
+                {
+                  "name": "Node-2",
+                  "extension": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/ArcInstance-rg/providers/Microsoft.HybridCompute/machines/Node-2/Extensions/SecurityExtension",
+                  "state": "Failed"
+                }
+              ]
+            }
+          }
+        ]
+      }
+    }
+  }
+}
diff --git a/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/PatchExtension.json b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/PatchExtension.json
new file mode 100644
index 000000000000..264ca3326446
--- /dev/null
+++ b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/PatchExtension.json
@@ -0,0 +1,64 @@
+{
+  "parameters": {
+    "subscriptionId": "fd3c3665-1729-4b7b-9a38-238e83b0f98b",
+    "resourceGroupName": "test-rg",
+    "clusterName": "myCluster",
+    "arcSettingName": "default",
+    "extensionName": "MicrosoftMonitoringAgent",
+    "extension": {
+      "properties": {
+        "extensionParameters": {
+          "publisher": "Microsoft.Compute",
+          "typeHandlerVersion": "1.10",
+          "type": "MicrosoftMonitoringAgent",
+          "settings": {
+            "workspaceId": "xx"
+          }
+        }
+      }
+    },
+    "api-version": "2021-09-01"
+  },
+  "responses": {
+    "201": {
+      "body": {
+        "id": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/test-rg/providers/Microsoft.AzureStackHCI/clusters/myCluster/arcSettings/default/extensions/MicrosoftMonitoringAgent",
+        "name": "MicrosoftMonitoringAgent",
+        "type": "Microsoft.AzureStackHCI/clusters/arcSettings/extensions",
+        "systemData": {
+          "createdBy": "user1",
+          "createdByType": "User",
+          "createdAt": "2021-01-01T17:18:19.1234567Z",
+          "lastModifiedBy": "user2",
+          "lastModifiedByType": "User",
+          "lastModifiedAt": "2021-01-02T17:18:19.1234567Z"
+        },
+        "properties": {
+          "provisioningState": "Succeeded",
+          "extensionParameters": {
+            "publisher": "Microsoft.Compute",
+            "type": "string",
+            "typeHandlerVersion": "1.10.3",
+            "autoUpgradeMinorVersion": false,
+            "settings": {
+              "workspaceId": "xx"
+            }
+          },
+          "aggregateState": "PartiallyConnected",
+          "perNodeExtensionDetails": [
+            {
+              "name": "Node-1",
+              "extension": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/ArcInstance-rg/providers/Microsoft.HybridCompute/machines/Node-1/Extensions/MicrosoftMonitoringAgent",
+              "state": "Connected"
+            },
+            {
+              "name": "Node-2",
+              "extension": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/ArcInstance-rg/providers/Microsoft.HybridCompute/machines/Node-2/Extensions/MicrosoftMonitoringAgent",
+              "state": "Disconnected"
+            }
+          ]
+        }
+      }
+    }
+  }
+}
diff --git a/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/PutArcSetting.json b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/PutArcSetting.json
new file mode 100644
index 000000000000..4a767675c633
--- /dev/null
+++ b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/PutArcSetting.json
@@ -0,0 +1,43 @@
+{
+  "parameters": {
+    "subscriptionId": "fd3c3665-1729-4b7b-9a38-238e83b0f98b",
+    "resourceGroupName": "test-rg",
+    "clusterName": "myCluster",
+    "arcSettingName": "default",
+    "arcSetting": {},
+    "api-version": "2021-09-01"
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "id": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/test-rg/providers/Microsoft.AzureStackHCI/clusters/myCluster/arcSettings/default",
+        "type": "Microsoft.AzureStackHCI/clusters/arcSettings",
+        "systemData": {
+          "createdBy": "user1",
+          "createdByType": "User",
+          "createdAt": "2021-01-01T17:18:19.1234567Z",
+          "lastModifiedBy": "user2",
+          "lastModifiedByType": "User",
+          "lastModifiedAt": "2021-01-02T17:18:19.1234567Z"
+        },
+        "properties": {
+          "provisioningState": "Succeeded",
+          "arcInstanceResourceGroup": "ArcInstance-rg",
+          "aggregateState": "Creating",
+          "perNodeDetails": [
+            {
+              "name": "Node-1",
+              "arcInstance": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/ArcInstance-rg/providers/Microsoft.HybridCompute/machines/Node-1",
+              "state": "Creating"
+            },
+            {
+              "name": "Node-2",
+              "arcInstance": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/ArcInstance-rg/providers/Microsoft.HybridCompute/machines/Node-2",
+              "state": "Creating"
+            }
+          ]
+        }
+      }
+    }
+  }
+}
diff --git a/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/PutExtension.json b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/PutExtension.json
new file mode 100644
index 000000000000..620de88fab0f
--- /dev/null
+++ b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/PutExtension.json
@@ -0,0 +1,107 @@
+{
+  "parameters": {
+    "subscriptionId": "fd3c3665-1729-4b7b-9a38-238e83b0f98b",
+    "resourceGroupName": "test-rg",
+    "clusterName": "myCluster",
+    "arcSettingName": "default",
+    "extensionName": "MicrosoftMonitoringAgent",
+    "extension": {
+      "properties": {
+        "extensionParameters": {
+          "publisher": "Microsoft.Compute",
+          "typeHandlerVersion": "1.10",
+          "type": "MicrosoftMonitoringAgent",
+          "settings": {
+            "workspaceId": "xx"
+          },
+          "protectedSettings": {
+            "workspaceKey": "xx"
+          }
+        }
+      }
+    },
+    "api-version": "2021-09-01"
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "id": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/test-rg/providers/Microsoft.AzureStackHCI/clusters/myCluster/arcSettings/default/extensions/MicrosoftMonitoringAgent",
+        "name": "MicrosoftMonitoringAgent",
+        "type": "Microsoft.AzureStackHCI/clusters/arcSettings/extensions",
+        "systemData": {
+          "createdBy": "user1",
+          "createdByType": "User",
+          "createdAt": "2021-01-01T17:18:19.1234567Z",
+          "lastModifiedBy": "user2",
+          "lastModifiedByType": "User",
+          "lastModifiedAt": "2021-01-02T17:18:19.1234567Z"
+        },
+        "properties": {
+          "provisioningState": "Succeeded",
+          "extensionParameters": {
+            "publisher": "Microsoft.Compute",
+            "type": "string",
+            "typeHandlerVersion": "1.10.3",
+            "autoUpgradeMinorVersion": false,
+            "settings": {
+              "workspaceId": "xx"
+            }
+          },
+          "aggregateState": "PartiallySucceeded",
+          "perNodeExtensionDetails": [
+            {
+              "name": "Node-1",
+              "extension": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/ArcInstance-rg/providers/Microsoft.HybridCompute/machines/Node-1/Extensions/MicrosoftMonitoringAgent",
+              "state": "Succeeded"
+            },
+            {
+              "name": "Node-2",
+              "extension": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/ArcInstance-rg/providers/Microsoft.HybridCompute/machines/Node-2/Extensions/MicrosoftMonitoringAgent",
+              "state": "Failed"
+            }
+          ]
+        }
+      }
+    },
+    "201": {
+      "body": {
+        "id": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/test-rg/providers/Microsoft.AzureStackHCI/clusters/myCluster/arcSettings/default/extensions/MicrosoftMonitoringAgent",
+        "name": "MicrosoftMonitoringAgent",
+        "type": "Microsoft.AzureStackHCI/clusters/arcSettings/extensions",
+        "systemData": {
+          "createdBy": "user1",
+          "createdByType": "User",
+          "createdAt": "2021-01-01T17:18:19.1234567Z",
+          "lastModifiedBy": "user2",
+          "lastModifiedByType": "User",
+          "lastModifiedAt": "2021-01-02T17:18:19.1234567Z"
+        },
+        "properties": {
+          "provisioningState": "Succeeded",
+          "extensionParameters": {
+            "publisher": "Microsoft.Compute",
+            "type": "string",
+            "typeHandlerVersion": "1.10.3",
+            "autoUpgradeMinorVersion": false,
+            "settings": {
+              "workspaceId": "xx"
+            }
+          },
+          "aggregateState": "PartiallySucceeded",
+          "perNodeExtensionDetails": [
+            {
+              "name": "Node-1",
+              "extension": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/ArcInstance-rg/providers/Microsoft.HybridCompute/machines/Node-1/Extensions/MicrosoftMonitoringAgent",
+              "state": "Succeeded"
+            },
+            {
+              "name": "Node-2",
+              "extension": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/ArcInstance-rg/providers/Microsoft.HybridCompute/machines/Node-2/Extensions/MicrosoftMonitoringAgent",
+              "state": "Failed"
+            }
+          ]
+        }
+      }
+    }
+  }
+}
diff --git a/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/UpdateCluster.json b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/UpdateCluster.json
new file mode 100644
index 000000000000..830d1bcfb929
--- /dev/null
+++ b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/examples/UpdateCluster.json
@@ -0,0 +1,106 @@
+{
+  "parameters": {
+    "subscriptionId": "fd3c3665-1729-4b7b-9a38-238e83b0f98b",
+    "resourceGroupName": "test-rg",
+    "clusterName": "myCluster",
+    "api-version": "2021-09-01",
+    "cluster": {
+      "tags": {
+        "tag1": "value1",
+        "tag2": "value2"
+      },
+      "properties": {
+        "cloudManagementEndpoint": "https://98294836-31be-4668-aeae-698667faf99b.waconazure.com",
+        "desiredProperties": {
+          "windowsServerSubscription": "Enabled",
+          "diagnosticLevel": "Required"
+        }
+      }
+    }
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "id": "/subscriptions/fd3c3665-1729-4b7b-9a38-238e83b0f98b/resourceGroups/test-rg/providers/Microsoft.AzureStackHCI/clusters/myCluster",
+        "name": "myCluster",
+        "type": "Microsoft.AzureStackHCI/clusters",
+        "location": "East US",
+        "tags": {
+          "tag1": "value1",
+          "tag2": "value2"
+        },
+        "systemData": {
+          "createdBy": "user1",
+          "createdByType": "User",
+          "createdAt": "2020-01-01T17:18:19.1234567Z",
+          "lastModifiedBy": "user2",
+          "lastModifiedByType": "User",
+          "lastModifiedAt": "2020-01-02T17:18:19.1234567Z"
+        },
+        "properties": {
+          "provisioningState": "Succeeded",
+          "status": "ConnectedRecently",
+          "cloudId": "91c2b355-4826-4e96-9164-e3f26dcf1cdd",
+          "cloudManagementEndpoint": "https://98294836-31be-4668-aeae-698667faf99b.waconazure.com",
+          "aadClientId": "515da1c2-379e-49b4-9975-09e3e40c86be",
+          "aadTenantId": "7e589cc1-a8b6-4dff-91bd-5ec0fa18db94",
+          "desiredProperties": {
+            "windowsServerSubscription": "Enabled",
+            "diagnosticLevel": "Required"
+          },
+          "reportedProperties": {
+            "clusterName": "cluster1",
+            "clusterId": "a76ac23a-1819-4e82-9410-e3e4ec3d1425",
+            "clusterVersion": "10.0.17777",
+            "nodes": [
+              {
+                "name": "Node1",
+                "id": 1,
+                "windowsServerSubscription": "Enabled",
+                "manufacturer": "Dell Inc.",
+                "model": "EMC AX740",
+                "osName": "Azure Stack HCI",
+                "osVersion": "10.0.17777.1061",
+                "serialNumber": "Q45CZC3",
+                "coreCount": 8,
+                "memoryInGiB": 128
+              },
+              {
+                "name": "Node2",
+                "id": 2,
+                "windowsServerSubscription": "Enabled",
+                "manufacturer": "Dell Inc.",
+                "model": "EMC AX740",
+                "osName": "Azure Stack HCI",
+                "osVersion": "10.0.17777.1061",
+                "serialNumber": "Q44BSC3",
+                "coreCount": 8,
+                "memoryInGiB": 128
+              },
+              {
+                "name": "Node3",
+                "id": 3,
+                "windowsServerSubscription": "Enabled",
+                "manufacturer": "Dell Inc.",
+                "model": "EMC AX740",
+                "osName": "Azure Stack HCI",
+                "osVersion": "10.0.17777.1061",
+                "serialNumber": "Q44RFC3",
+                "coreCount": 16,
+                "memoryInGiB": 256
+              }
+            ],
+            "lastUpdated": "2020-03-11T19:24:42.1946017Z",
+            "imdsAttestation": "Disabled",
+            "diagnosticLevel": "Required"
+          },
+          "trialDaysRemaining": 30,
+          "billingModel": "Trial",
+          "registrationTimestamp": "2020-03-11T20:44:32.5625121Z",
+          "lastSyncTimestamp": "2020-03-11T20:44:32.5625121Z",
+          "lastBillingTimestamp": "2020-03-12T08:12:55.2312022Z"
+        }
+      }
+    }
+  }
+}
diff --git a/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/extensions.json b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/extensions.json
new file mode 100644
index 000000000000..0c285788a726
--- /dev/null
+++ b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/extensions.json
@@ -0,0 +1,500 @@
+{
+  "swagger": "2.0",
+  "info": {
+    "version": "2021-09-01",
+    "title": "AzureStackHCI",
+    "description": "Azure Stack HCI management service"
+  },
+  "host": "management.azure.com",
+  "schemes": [
+    "https"
+  ],
+  "consumes": [
+    "application/json"
+  ],
+  "produces": [
+    "application/json"
+  ],
+  "security": [
+    {
+      "azure_auth": [
+        "user_impersonation"
+      ]
+    }
+  ],
+  "securityDefinitions": {
+    "azure_auth": {
+      "type": "oauth2",
+      "authorizationUrl": "https://login.microsoftonline.com/common/oauth2/authorize",
+      "flow": "implicit",
+      "description": "Azure Active Directory OAuth2 Flow",
+      "scopes": {
+        "user_impersonation": "impersonate your user account"
+      }
+    }
+  },
+  "paths": {
+    "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.AzureStackHCI/clusters/{clusterName}/arcSettings/{arcSettingName}/extensions": {
+      "get": {
+        "operationId": "Extensions_ListByArcSetting",
+        "description": "List all Extensions under ArcSetting resource.",
+        "parameters": [
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/SubscriptionIdParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/ResourceGroupNameParameter"
+          },
+          {
+            "$ref": "#/parameters/ClusterNameParameter"
+          },
+          {
+            "$ref": "#/parameters/ArcSettingNameParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/ApiVersionParameter"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK",
+            "schema": {
+              "$ref": "#/definitions/ExtensionList"
+            }
+          },
+          "default": {
+            "description": "Error response describing why the operation failed.",
+            "schema": {
+              "$ref": "../../../../../common-types/resource-management/v2/types.json#/definitions/ErrorResponse"
+            }
+          }
+        },
+        "x-ms-examples": {
+          "List Extensions under ArcSetting resource": {
+            "$ref": "./examples/ListExtensionsByArcSetting.json"
+          }
+        },
+        "x-ms-pageable": {
+          "nextLinkName": "nextLink"
+        }
+      }
+    },
+    "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.AzureStackHCI/clusters/{clusterName}/arcSettings/{arcSettingName}/extensions/{extensionName}": {
+      "get": {
+        "operationId": "Extensions_Get",
+        "description": "Get particular Arc Extension of HCI Cluster.",
+        "parameters": [
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/SubscriptionIdParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/ResourceGroupNameParameter"
+          },
+          {
+            "$ref": "#/parameters/ClusterNameParameter"
+          },
+          {
+            "$ref": "#/parameters/ArcSettingNameParameter"
+          },
+          {
+            "$ref": "#/parameters/ExtensionNameParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/ApiVersionParameter"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK",
+            "schema": {
+              "$ref": "#/definitions/Extension"
+            }
+          },
+          "default": {
+            "description": "Error response describing why the operation failed.",
+            "schema": {
+              "$ref": "../../../../../common-types/resource-management/v2/types.json#/definitions/ErrorResponse"
+            }
+          }
+        },
+        "x-ms-examples": {
+          "Get ArcSettings Extension": {
+            "$ref": "./examples/GetExtension.json"
+          }
+        }
+      },
+      "put": {
+        "operationId": "Extensions_Create",
+        "description": "Create Extension for HCI cluster.",
+        "parameters": [
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/SubscriptionIdParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/ResourceGroupNameParameter"
+          },
+          {
+            "$ref": "#/parameters/ClusterNameParameter"
+          },
+          {
+            "$ref": "#/parameters/ArcSettingNameParameter"
+          },
+          {
+            "$ref": "#/parameters/ExtensionNameParameter"
+          },
+          {
+            "name": "extension",
+            "in": "body",
+            "required": true,
+            "schema": {
+              "$ref": "#/definitions/Extension"
+            },
+            "description": "Details of the Machine Extension to be created."
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/ApiVersionParameter"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "Succeeded",
+            "schema": {
+              "$ref": "#/definitions/Extension"
+            }
+          },
+          "201": {
+            "description": "Created",
+            "schema": {
+              "$ref": "#/definitions/Extension"
+            }
+          },
+          "default": {
+            "description": "Error response describing why the operation failed.",
+            "schema": {
+              "$ref": "../../../../../common-types/resource-management/v2/types.json#/definitions/ErrorResponse"
+            }
+          }
+        },
+        "x-ms-long-running-operation": true,
+        "x-ms-long-running-operation-options": {
+          "final-state-via": "azure-async-operation"
+        },
+        "x-ms-examples": {
+          "Create Arc Extension": {
+            "$ref": "./examples/PutExtension.json"
+          }
+        }
+      },
+      "patch": {
+        "operationId": "Extensions_Update",
+        "description": "Update Extension for HCI cluster.",
+        "parameters": [
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/SubscriptionIdParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/ResourceGroupNameParameter"
+          },
+          {
+            "$ref": "#/parameters/ClusterNameParameter"
+          },
+          {
+            "$ref": "#/parameters/ArcSettingNameParameter"
+          },
+          {
+            "$ref": "#/parameters/ExtensionNameParameter"
+          },
+          {
+            "name": "extension",
+            "in": "body",
+            "required": true,
+            "schema": {
+              "$ref": "#/definitions/Extension"
+            },
+            "description": "Details of the Machine Extension to be created."
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/ApiVersionParameter"
+          }
+        ],
+        "responses": {
+          "201": {
+            "description": "OK",
+            "schema": {
+              "$ref": "#/definitions/Extension"
+            }
+          },
+          "default": {
+            "description": "Error response describing why the operation failed.",
+            "schema": {
+              "$ref": "../../../../../common-types/resource-management/v2/types.json#/definitions/ErrorResponse"
+            }
+          }
+        },
+        "x-ms-long-running-operation": true,
+        "x-ms-long-running-operation-options": {
+          "final-state-via": "original-uri"
+        },
+        "x-ms-examples": {
+          "Update Arc Extension": {
+            "$ref": "./examples/PatchExtension.json"
+          }
+        }
+      },
+      "delete": {
+        "operationId": "Extensions_Delete",
+        "description": "Delete particular Arc Extension of HCI Cluster.",
+        "parameters": [
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/SubscriptionIdParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/ResourceGroupNameParameter"
+          },
+          {
+            "$ref": "#/parameters/ClusterNameParameter"
+          },
+          {
+            "$ref": "#/parameters/ArcSettingNameParameter"
+          },
+          {
+            "$ref": "#/parameters/ExtensionNameParameter"
+          },
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/ApiVersionParameter"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK"
+          },
+          "202": {
+            "description": "OK"
+          },
+          "204": {
+            "description": "OK"
+          },
+          "default": {
+            "description": "Error response describing why the operation failed.",
+            "schema": {
+              "$ref": "../../../../../common-types/resource-management/v2/types.json#/definitions/ErrorResponse"
+            }
+          }
+        },
+        "x-ms-long-running-operation": true,
+        "x-ms-long-running-operation-options": {
+          "final-state-via": "azure-async-operation"
+        },
+        "x-ms-examples": {
+          "Delete Arc Extension": {
+            "$ref": "./examples/DeleteExtension.json"
+          }
+        }
+      }
+    }
+  },
+  "definitions": {
+    "Extension": {
+      "description": "Details of a particular extension in HCI Cluster.",
+      "type": "object",
+      "allOf": [
+        {
+          "$ref": "../../../../../common-types/resource-management/v2/types.json#/definitions/ProxyResource"
+        }
+      ],
+      "properties": {
+        "systemData": {
+          "description": "System data of Extension resource.",
+          "$ref": "../../../../../common-types/resource-management/v2/types.json#/definitions/systemData",
+          "x-ms-client-flatten": true,
+          "readOnly": true
+        },
+        "properties": {
+          "description": "Describes Machine Extension Properties.",
+          "$ref": "#/definitions/ExtensionProperties",
+          "x-ms-client-flatten": true
+        }
+      }
+    },
+    "ExtensionProperties": {
+      "description": "Status of Arc Extension for a particular node in HCI Cluster.",
+      "type": "object",
+      "properties": {
+        "provisioningState": {
+          "description": "Provisioning state of the Extension proxy resource.",
+          "type": "string",
+          "enum": [
+            "Succeeded",
+            "Failed",
+            "Canceled",
+            "Accepted",
+            "Provisioning"
+          ],
+          "x-ms-enum": {
+            "name": "ProvisioningState",
+            "modelAsString": true
+          },
+          "readOnly": true
+        },
+        "extensionParameters": {
+          "description": "Parameters specific to this extension type.",
+          "$ref": "#/definitions/ExtensionParameters",
+          "x-ms-client-flatten": true
+        },
+        "aggregateState": {
+          "description": "Aggregate state of Arc Extensions across the nodes in this HCI cluster.",
+          "type": "string",
+          "enum": [
+            "NotSpecified",
+            "Error",
+            "Succeeded",
+            "Canceled",
+            "Failed",
+            "Connected",
+            "Disconnected",
+            "Deleted",
+            "Creating",
+            "Updating",
+            "Deleting",
+            "Moving",
+            "PartiallySucceeded",
+            "PartiallyConnected",
+            "InProgress"
+          ],
+          "x-ms-enum": {
+            "name": "ExtensionAggregateState",
+            "modelAsString": true
+          },
+          "readOnly": true
+        },
+        "perNodeExtensionDetails": {
+          "description": "State of Arc Extension in each of the nodes.",
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/PerNodeExtensionState"
+          },
+          "readOnly": true
+        }
+      }
+    },
+    "PerNodeExtensionState": {
+      "description": "Status of Arc Extension for a particular node in HCI Cluster.",
+      "type": "object",
+      "properties": {
+        "name": {
+          "description": "Name of the node in HCI Cluster.",
+          "type": "string",
+          "readOnly": true
+        },
+        "extension": {
+          "description": "Fully qualified resource ID for the particular Arc Extension on this node.",
+          "type": "string",
+          "readOnly": true
+        },
+        "state": {
+          "description": "State of Arc Extension in this node.",
+          "type": "string",
+          "enum": [
+            "NotSpecified",
+            "Error",
+            "Succeeded",
+            "Canceled",
+            "Failed",
+            "Connected",
+            "Disconnected",
+            "Deleted",
+            "Creating",
+            "Updating",
+            "Deleting",
+            "Moving"
+          ],
+          "x-ms-enum": {
+            "name": "NodeExtensionState",
+            "modelAsString": true
+          },
+          "readOnly": true
+        }
+      }
+    },
+    "ExtensionList": {
+      "description": "List of Extensions in HCI cluster.",
+      "type": "object",
+      "properties": {
+        "value": {
+          "description": "List of Extensions in HCI cluster.",
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/Extension"
+          },
+          "readOnly": true
+        },
+        "nextLink": {
+          "description": "Link to the next set of results.",
+          "type": "string",
+          "readOnly": true
+        }
+      }
+    },
+    "ExtensionParameters": {
+      "description": "Describes the properties of a Machine Extension. This object mirrors the definition in HybridCompute.",
+      "type": "object",
+      "properties": {
+        "forceUpdateTag": {
+          "type": "string",
+          "description": "How the extension handler should be forced to update even if the extension configuration has not changed."
+        },
+        "publisher": {
+          "type": "string",
+          "description": "The name of the extension handler publisher."
+        },
+        "type": {
+          "type": "string",
+          "description": "Specifies the type of the extension; an example is \"CustomScriptExtension\"."
+        },
+        "typeHandlerVersion": {
+          "type": "string",
+          "description": "Specifies the version of the script handler."
+        },
+        "autoUpgradeMinorVersion": {
+          "type": "boolean",
+          "description": "Indicates whether the extension should use a newer minor version if one is available at deployment time. Once deployed, however, the extension will not upgrade minor versions unless redeployed, even with this property set to true."
+        },
+        "settings": {
+          "type": "object",
+          "description": "Json formatted public settings for the extension."
+        },
+        "protectedSettings": {
+          "type": "object",
+          "description": "Protected settings (may contain secrets).",
+          "x-ms-secret": true
+        }
+      }
+    }
+  },
+  "parameters": {
+    "ClusterNameParameter": {
+      "name": "clusterName",
+      "in": "path",
+      "required": true,
+      "type": "string",
+      "description": "The name of the cluster.",
+      "x-ms-parameter-location": "method"
+    },
+    "ArcSettingNameParameter": {
+      "name": "arcSettingName",
+      "in": "path",
+      "required": true,
+      "type": "string",
+      "description": "The name of the proxy resource holding details of HCI ArcSetting information.",
+      "x-ms-parameter-location": "method"
+    },
+    "ExtensionNameParameter": {
+      "name": "extensionName",
+      "in": "path",
+      "required": true,
+      "type": "string",
+      "description": "The name of the machine extension.",
+      "x-ms-parameter-location": "method"
+    }
+  }
+}
diff --git a/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/operations.json b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/operations.json
new file mode 100644
index 000000000000..52e8cd743b91
--- /dev/null
+++ b/specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2021-09-01/operations.json
@@ -0,0 +1,68 @@
+{
+  "swagger": "2.0",
+  "info": {
+    "version": "2021-09-01",
+    "title": "AzureStackHCI",
+    "description": "Azure Stack HCI management service"
+  },
+  "host": "management.azure.com",
+  "schemes": [
+    "https"
+  ],
+  "consumes": [
+    "application/json"
+  ],
+  "produces": [
+    "application/json"
+  ],
+  "security": [
+    {
+      "azure_auth": [
+        "user_impersonation"
+      ]
+    }
+  ],
+  "securityDefinitions": {
+    "azure_auth": {
+      "type": "oauth2",
+      "authorizationUrl": "https://login.microsoftonline.com/common/oauth2/authorize",
+      "flow": "implicit",
+      "description": "Azure Active Directory OAuth2 Flow",
+      "scopes": {
+        "user_impersonation": "impersonate your user account"
+      }
+    }
+  },
+  "paths": {
+    "/providers/Microsoft.AzureStackHCI/operations": {
+      "get": {
+        "tags": [
+          "Operations"
+        ],
+        "operationId": "Operations_List",
+        "description": "List all available Microsoft.AzureStackHCI provider operations",
+        "parameters": [
+          {
+            "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/ApiVersionParameter"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK",
+            "schema": {
+              "$ref": "../../../../../common-types/resource-management/v2/types.json#/definitions/OperationListResult"
+            }
+          },
+          "default": {
+            "description": "Error response describing why the operation failed.",
+            "schema": {
+              "$ref": "../../../../../common-types/resource-management/v2/types.json#/definitions/ErrorResponse"
+            }
+          }
+        }
+      }
+    }
+  },
+  "definitions": {},
+  "parameters": {}
+}
diff --git a/specification/azurestackhci/resource-manager/readme.md b/specification/azurestackhci/resource-manager/readme.md
index 1ccf280a1ac3..c947f4db61c2 100644
--- a/specification/azurestackhci/resource-manager/readme.md
+++ b/specification/azurestackhci/resource-manager/readme.md
@@ -29,7 +29,7 @@ title: AzureStackHCIClient
 description: Azure Stack HCI management service
 openapi-type: arm
 openapi-subtype: rpaas
-tag: package-preview-2021-01
+tag: package-2021-09
 ```
 
 ## Suppression
@@ -46,17 +46,29 @@ directive:
 ```
 
 
+### Tag: package-2021-09
+
+These settings apply only when `--tag=package-2021-09` is specified on the command line.
+
+```yaml $(tag) == 'package-2021-09'
+input-file:
+  - Microsoft.AzureStackHCI/stable/2021-09-01/arcSettings.json
+  - Microsoft.AzureStackHCI/stable/2021-09-01/clusters.json
+  - Microsoft.AzureStackHCI/stable/2021-09-01/extensions.json
+  - Microsoft.AzureStackHCI/stable/2021-09-01/operations.json
+```
 ### Tag: package-preview-2021-01
 
 These settings apply only when `--tag=package-preview-2021-01` is specified on the command line.
 
-```yaml $(tag) == 'package-preview-2021-01'
+``` yaml $(tag) == 'package-preview-2021-01'
 input-file:
   - Microsoft.AzureStackHCI/preview/2021-01-01-preview/arcSettings.json
   - Microsoft.AzureStackHCI/preview/2021-01-01-preview/clusters.json
   - Microsoft.AzureStackHCI/preview/2021-01-01-preview/extensions.json
   - Microsoft.AzureStackHCI/preview/2021-01-01-preview/operations.json
 ```
+
 ### Tag: package-2020-10
 
 These settings apply only when `--tag=package-2020-10` is specified on the command line.