I have known Windows NT from the first version: 3.1. In 1996, I was commissioned to develop Easy Access Programmer for Philips Communication and Security Systems. This application is written in C++ and had to run under Windows 95 (16 bits) and Windows NT4 (32 bits).
In 1997, for a bit of variety I managed the Windows NT server park of what was then called KPN Research for six months, during which time the server park expanded significantly. In 2002, I converted the Novell network in the Rotterdam Library to a Windows NT Network including AD and Exchange.
Most of the software developed over the past 15 years was for Windows NT. From a library catalog to a job server.