Windows Server 2008 Standard is one of Microsoft's entry level server offerings (alongside Windows Web Server 2008) and is one of the least expensive of the various editions available. Both 32-bit and 64-bit versions are available, and in terms of hardware Standard Edition supports up to 4GB of RAM and 4 processors.
Windows Server 2008 is primarily targeted for small and mid-sized businesses (SMBs) and is ideal for providing domain, web, DNS, remote access, print, file and application services. Support for clustering, however, is notably absent from this edition. An upgrade path to Windows Server 2008 Standard is available from Windows 2000 Server and Windows Server 2003 Standard Edition. * Windows Server 2008 Enterprise Edition.
Windows Server 2008 Enterprise Edition provides greater functionality and scalability than the Standard Edition. As with Standard Edition both 32-bit and 64-bit versions are available. Enhancements include support for as many as 8 processors and up to 64GB of RAM on 32-bit systems and 2TB of RAM on 64-bit systems. Additional features of the Enterprise edition include support for clusters of up to 8 nodes and Active Directory Federated Services (AD FS). Windows Server 2000, Windows