Windows Server 2003 is the latest version of Microsoft's enterprise server operating system. The Windows Server 2003 family is the successor to the Windows 2000 Server family, which in turn built upon Windows NT Server. Windows Server 2003 introduces many new features and offers significant improvements to many features found in earlier Windows Server operating systems.
Before you can begin using Windows Server 2003, though, you need to understand the family of products that carry the Server name and how they differ from one another. You also have to understand their common memory and processor architecture, and some of the basic technologies that Windows Server 2003 is built upon.