Windows Server 2008 is designed around certain roles and features. A role is a primary duty that a server performs. For example, you typically would point at a server and say "that's my domain controller (DC) and DNS server." A feature is something that helps a server perform its primary duty (Windows Backup, network load balancing). Certain roles are comprised of sub-elements called Role Services, which are distinct units of functionality. For example, within the role of Terminal Services, is the TS Gateway and TS Licensing Role Services (among others).] Please note that Server 2008 Web Edition has only the Web Server role. Also note that WINS isn't a role in Server 2008, it's a feature.The Server 2008 roles are as follows: