Active Directory Domain Services
Applies To: Windows Server 2008
Active Directory Domain Services (AD DS) stores directory data and manages communication between users and domains, including user logon processes, authentication, and directory searches. An Active Directory domain controller is a server that is running AD DS.
Help installed with Windows Vista and Windows Server 2008 is also available in the Windows Server 2008 Technical Library.
Windows Server 2008 TechCenter: Active Directory Domain Services
TechCenters provide links to content outside the Technical Library, including Knowledge Base articles, downloads, technical articles, and other resources.