You can gradually apply DI: if you don't want to register all of your components that's OK. Still, I think it's very useful and lightweight on .net core/.net 5

You can gradually apply DI: if you don't want to register all of your components that's OK. Still, I think it's very useful and lightweight on .net core/.net 5. Python's Fast API has some kind of lightweight DI too... and that's great.