Active Directory is a Microsoft technology primarily for managing multiple Windows servers and workstations in a single environment. It was first released in 2000.

Active Directory is a directory service created by Microsoft for managing Windows environments.

It is used for:

  • A centralized Authentication/Authorization source for Kerberos and NTLM protocols.
  • Providing a single authentication/authorization domain for member servers and workstations.
  • Providing LDAP services.
  • Providing centralized configuration methods of Windows workstations and servers through Group Policy and other methods.
  • Multi-site replication of directory-database data.

Useful Links:

  1. Active Directory - Wiki
  2. Active Directory Domain Services
  3. ActiveDirectory - PowerShell
  4. Azure Active Directory documentation