Answer: The NT in Windows NT stands for "New Technology." Windows NT was built with primarily the same interface as Windows 95, but included new technology such as preemptive multitasking and was the first 32-bit version of the Windows operating system. Some argue that because of the new networking options included with Windows NT, the abbreviation stands for "Networking Technology." However the official meaning of NT, according to Microsoft, is "New Technology."
Windows NT was originally developed to be a a reliable and scalable operating system for businesses. However, the NT kernel later became the foundation of Windows 2000 and then Windows XP, which is available in both Home and Professional versions.