Probably the most formative experience in my early career was seeing a massive (attempted) rewrite from a monolith to microservices. Multi-unicorn company spent

Probably the most formative experience in my early career was seeing a massive (attempted) rewrite from a monolith to microservices. Multi-unicorn company spent a year and $Ms in developer hours just to realize that the network separation did more harm than good. There are use cases for network separation (fault tolerance, independent scaling, polyglot teams etc.) but for essentially every startup I've been at, the better bet is to enforce logical boundaries in the codebase itself.