microservice architectures can only work when the deployment is automated! Microservices substantially increase the number of deployable units compared to a deployment monolith. This is only feasible when the deployment processes are automated.

Independent deployment means that the continuous delivery pipelines have to be completely independent. Integration tests conflict with this independence. They introduce dependencies between the continuous delivery pipelines of the individual microservices. Therefore, integration tests must be reduced to the minimum. Depending on the type of communication, there are different approaches to achieve this for synchronous and asynchronous communication.