[zbobet2012]

What same-process modularization does _not_ solve is independent lifecycle management. In a monolithic system your change rate often becomes tied to your slowest, most bug prone module or team. If you've some integration test that bakes some piece of important code for 48 hours, you can only make a change _everywhere_ else every 48 hours.

Now sometimes folks (the Windows team famously did this) build systems which identify which tests to run based on changes that occur in the codebase, but that's _not_ easy.

[SideburnsOfDoom]

Yes. With the microservice as the unit of deployment, the design is about team structure as much as it is anything else. The team of 4-12 people owns and deploys a service at their own pace, without needing to be part of a larger and slower batch.

If you're interested in iterative development and continuous deployment, which of course I am, it is a natural fit. It is productive in that case.