This document discusses the benefits of microservices architectures for simplifying complex systems. It outlines how Remmelt Pit transitioned an auction and listings website from a monolithic architecture to microservices. Some best practices they followed included defining strict contracts between loosely coupled services, thorough documentation, and avoiding polyglot approaches. Areas for improvement included starting smaller, better onboarding operations teams, and underestimating the needed culture change. Overall, microservices allow for improved scalability, flexibility to swap out services, and increased developer happiness and productivity when done right.