@b0rk I once contributed to a university project where they wanted to use high-powered lasers for projecting a sort of digital firework over the city. They got the project approved but only under the condition that they take highest care for installing a high-quality safety sensor (which would detect if the laser was interrupted and shut it down ASAP). Part of that installation was a custom fiber link over which they needed a common network protocol with minimum overhead and latency, hence UDP