I worked for a major day trading software company back in 1999 or so and we built everything around NT. I had come from a Unix background, but to be honest NT w

I worked for a major day trading software company back in 1999 or so and we built everything around NT. I had come from a Unix background, but to be honest NT was the perfect choice at the time for building the back end of a large-scale retail trading platform. And IO completion ports were amazing compared to what was available on other platforms.