Active Directory Services
The Microsoft Windows Server Active Directory Services consist of multiple Directory Services. The best known is Active Directory Directory Services. Commonly abbreviated as AD. [1]
Active Directory Services include
Active Directory Certificate Services (AD CS) Certificate servers validate, or certify, keys as part of a Public key infrastructure.
Active Directory Domain Services (AD DS) An Active Directory Domain Services domain controller authenticates and authorizes all users and computers in a Windows domain type network—assigning and enforcing security policies for all computers and installing or updating software.
Active Directory Federation Services (AD FS) Active Directory Federation Services provides users with single sign-on access to systems and applications located across organizational boundaries. It uses a claims-based access-control authorization model to maintain application security and to implement federated identity.
Active Directory Lightweight Directory Services (AD LDS) Provides directory services for directory-enabled applications without incurring the overhead of domains and forests and the requirements of a single schema throughout a forest. It was formerly known as Active Directory Application Mode (ADAM).
Active Directory Rights Management Services (AD RMS) Windows Rights Management Services is a form of Information Rights Management that uses encryption and a form of selective functionality denial for limiting access to documents.