That's really a list of how not to develop microservices, or even software... Thoughts must obviously be given to protocols. Json is an obvious bad choice for

That's really a list of how not to develop microservices, or even software... Thoughts must obviously be given to protocols. Json is an obvious bad choice for this use case... The point of microservices is loose coupling, including in the code. Having a code hierarchy negates this and arguably is bad practice in general.