The problem with this sort of discussion is there isn't a one size fits all architecture/structure, each project is different and so the structure should look different. Taking inspiration from others is good, see how people make things fit together but don't join the cults. https://blog.cleancoder.com/uncle-bob/2012/08/13/the-clean-architecture.html has some good ideas https://jimmybogard.com/vertical-slice-architecture/ has some good ideas I am inspired by both of them but I won't try replicate either exactly for a new project, I will let the project evolve naturally