A family of server products from Microsoft that provides back office services. .NET Enterprise Servers are extensions to Microsoft's BackOffice suite with enhancements that support the .NET Framework. However, the first servers introduced with the .NET name in late 2000 were only a re-branding of the traditional Windows DNA products in order to promote the .NET platform. .NET enhancements have been gradually added. See Windows Server 2003 and .NET.

Windows Server (formerly .NET Server)
The next generation of the Windows 2000 network operating system with .NET enhancements. In 2003, .NET Server 2003 was renamed Windows Server 2003. See .NET Server.

Application Center
Load balancing, clustering, replication and central management of multiple IIS Web servers.

Commerce Server
A merchant server with shopping cart and credit card capabilities.

Internet Security and Acceleration (ISA) Server
A firewall, Web caching and policy management server. Replaces Microsoft Proxy Server.

Exchange Server
An e-mail messaging and collaboration server.

Mobile Information Server
An extension to Exchange Server for mobile users.

SQL Server
Microsoft's database management system (DBMS).

BizTalk Server
An integration server based on XML.

Host Integration Server
An extension to SNA server. Provides integration of Windows, AS/400s and mainframes.