The idea with xcopy deployment, is that you still use the JIT compiler, but all required libraries, including the runtime, are packaged with the application.
So assuming you haven't forgotten any library, everything is loaded from there, not from GAC or somewhere else.
Ok, I see you didn't mean .NET Native and xcopy deployment work together but both are options now. Thanks for clarifying. I see the UWP app build folder has all the DLLs copied now.
So assuming you haven't forgotten any library, everything is loaded from there, not from GAC or somewhere else.
This only works for .NET Core.