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README.md

@@ -7,6 +7,8 @@ This microservices branch was initially derived from [AngularJS version](https:/
 To achieve that goal, we use Spring Cloud Gateway, Spring Cloud Circuit Breaker, Spring Cloud Config, Micrometer Tracing, Resilience4j, Open Telemetry 
 and the Eureka Service Discovery from the [Spring Cloud Netflix](https://github.com/spring-cloud/spring-cloud-netflix) technology stack.
 
+[![Open in GitHub Codespaces](https://github.com/codespaces/badge.svg)](https://codespaces.new/spring-petclinic/spring-petclinic-microservices)
+
 ## Starting services locally without Docker
 
 Every microservice is a Spring Boot application and can be started locally using IDE ([Lombok](https://projectlombok.org/) plugin has to be set up) or `../mvnw spring-boot:run` command. Please note that supporting services (Config and Discovery Server) must be started before any other application (Customers, Vets, Visits and API).