Windows Server 2003 is the most productive infrastructure platform for powering connected applications, networks, and Web services from the workgroup to the data center. Easy to deploy, manage, and use, Windows Server 2003 helps you build a secure IT infrastructure that provides a powerful application platform for quickly building connected solutions and an information worker infrastructure for enhanced communication and collaboration anytime and anywhere. Windows Server 2003, Enterprise Edition differs from Windows Server 2003, Standard Edition primarily in its support for high-performance servers and its ability to cluster servers for greater load handling. These capabilities provide reliability that helps ensure systems remain available even if problems arise. Windows Server 2003 Service Pack 1 (SP1) delivers on the promise of Microsoft's Trustworthy Computing initiative and illustrates Microsoft's commitment to creating software products with enhanced security, increased reliability, and simplified administration. SP1 builds upon the impressive track record of the award winning Windows Server 2003 operating system by providing refinements and supplying cumulative system patches.