The separation in micro services is hard to break though. You need to add an API on one side and a call on the other. In a monolith it's significantly easier t

The separation in micro services is hard to break though. You need to add an API on one side and a call on the other. In a monolith it's significantly easier to do something that has an unexpected impact somewhere else. For example, changing a shared object a singleton to a clone will give you race conditions all over the place. You just don't have that footgun in micro services.