Built on NT technology and an easy-to-use, familiar Windows 98 user interface, Windows 2000 Professional makes business users more productive. Its integrated Web capabilities and broad support for mobile computers and hardware devices make Windows 2000 the easy way for business users to connect to the Internet anywhere and anytime. Windows 2000 Professional is built upon the rock-solid reliability of Windows NT, which makes it significantly more reliable than either Windows 95 or Windows 98. Reliability improvements in Windows 2000 Professional make it even more stable than Windows NT Workstation. Windows 2000 Professional offers high system uptime, dynamic system configuration and resilience to application failures. The support for standards-based security in Windows 2000 Professional protects corporate data in stand-alone and networked environments. Windows 2000 Professional offers a set of built-in tools that make it easier to deploy and manage. In addition, Windows 2000 Professional offers an intelligent user interface that adapts to the way users work thereby making the users more efficient.

This is an upgrade from Windows 95 or Windows 98.