>identifying a logical feature and moving it to a microservice is one of the safer ways to begin a gradual rewrite of a critical system Why not identify that s

>identifying a logical feature and moving it to a microservice is one of the safer ways to begin a gradual rewrite of a critical system Why not identify that same logical feature and move it into a library. How does a Microservice add value here? Identifying, extracting and adding tests to logical features has been the sane way to rewrite software for ages. Michael feathers even wrote a book about it [1]. This ship of theseus approach works because it's incremental and allows for a complete rewrite without ever having non-functional software in between. Adding a REST/networking/orchestration boundary to make it a Microservice just for the sake of extracting it adds a lot of complexity for no gain. Microservice can be the right architecture, but not if all you want is to extract a library. [1] https://understandlegacycode.com/blog/key-points-of-working-effectively-with-legacy-code/ https://understandlegacycode.com/blog/key-points-of-working-...