As an example, I bought about 20 Raspberry PI zeros during the time I was limited to buying just one at a time. As a result, I still have quite a few of them unopened.
Wanting to use them for something, I thought why not use them as webservers. I was impressed with .Net's ability to run on practically any hardware, I thought why not the PI zero? Well, Microsoft won't support 32-bit hardware for some reason but the Mono project does just that. I then discovered Mono will run an executable built using a Windows build tool set. So I built an SD card with Linux, installed Mono, wrote a self hosted console app in C# and viola!
As a result, not only do i have a fully functional webserver running in self hosted mode, but as a bonus, I can write IoT code for the PI zero using C#!