I think we are definitely in agreement. It can be hard to determine when something should be a service or library and I don't know if I have a clear answer eit

I think we are definitely in agreement. It can be hard to determine when something should be a service or library and I don't know if I have a clear answer either. We also have, for example, libraries that purely compute data. However, they have to be consistent across the system and it would actually be pretty helpful if they were a microservice instead as the computations often need to be changed or updated. Perhaps when it's business logic it should be a service? I definitely see the need for libraries like compression, IO help, or even just pure math like doing matrix multiplication where older ways to compute aren't necessarily incorrect.