"Netflix is actually a log generating application that just happens to stream movies" Building a service/Microservice is itself easy. Scaling it on the cloud is not that hard either but operating, maintaining and iterating a production large scale service is not just about linearisation. As Cockcroft points out, telemetry and monitoring is the most important aspect of building Microservices We discuss 5 patterns that any serious Microservice should have: - Canary (an endpoint reporting health of underlying dependencies) - IO monitor (measuring all calls from Microservice to external dependencies) - A circuit breaker - An ActivityId-Propagator - An exception and short timeout retry policy