I CI test and deploy on bare metal debian and fedora systems without issue. It just has less of those performance tuning things in comparison. Like socket structure reuse in the kernel. just because they have a totally different kernel model, which is partially why polling is highly used on Linux in comparison.

I think it's worth pointing out that technically C# and .NET are separate. Using ms tools generally target .NET.

You can use any ELF library, and even C# + .NET supports mixed managed C++ code as well. Meaning you can use a few pragmas and link against the .NET runtime library and now you can intermix C++ and C# classes without any Pinvoke overhead. I had been told that mono (an alterntaive to .NET) that can run C# actually supports calling native code without any pinvoke overhead, but it has too many shortcomings for my work that I haven't switched to mono. Pinvoke has gotten much more performant in that past releases.

So technically it supports rust or whatever supports dlopen();