None whatsoever, unless they're heavily bought into Azure-specific services.
The idea that if you do C# you must be on Azure (or the other way around) has been outdated since Azure started. The first startup I ran tech at hosted C# on Mono in Docker containers on DigitalOcean and had devs on all 3 major OSes.
I'd be interested if anyone knows anything about this. Especially given the recent updates to for running .NET core on Linux/Mac, a company like Google could make great use of C# without needing to shell out for Windows licenses.
Don't know how true this still holds, but there was a time at least where it sounds like anything outside of C++, JVM languages and Python was off limits.
The idea that if you do C# you must be on Azure (or the other way around) has been outdated since Azure started. The first startup I ran tech at hosted C# on Mono in Docker containers on DigitalOcean and had devs on all 3 major OSes.