Microservices are a solution to an organizational challenge: how do we set clear boundaries of ownership within a complex system? From a technical perspective there are pros and cons.

Unfortunately, I don't see a wealth of other ready-made practices for companies to copy when they grow and need to solve this problem. I once worked on an enormous Rails monolith that was very well organized and had layered on several additional patterns to improve modularity and maintainability. Still, a SEV in a minor product area could (and did) bring down the whole system, and they were in the process of dismantling it.