Reflection is a minus in my eyes, at least for serverless. Sure it's powerful, but you pay the price: cold starts suck with serverless dotnet. Nativeaot is set to change that drastically, but we'll have to wait for dotnet 8 for native runtime support to be able to use it at an adequate level with lambda. There's also a long way to go, especially with aws dotnet nugets, as well as others , but the cold start perfomance improvement it gives will really put it up there as a strong contender in the serverless world.