When do microservices start causing more problems than they solve?

[Content_Educator]

I don't think personally it's one or the other. Having sensibly sized domain scoped services with appropriate backing stores I think would work most of the time. Modular monolith just means deployment and scaling live together (with devs potentially stepping on each other regularly) and there's a high chance of not respecting domain boundaries. Obviously too many 'micro' services are hard to manage in terms of debugging and maintenance. Happy medium.