With microservices you have to have a tradeoff - a monolith is inherently more testable at integration level, than a microservice based architecture. There's a

With microservices you have to have a tradeoff - a monolith is inherently more testable at integration level, than a microservice based architecture. There's a significant overhead to build and run tests at API level, that includes API versioning... and there's less of a need to version API inside a monolith.