Active Directory

Active Directory

Active Directory is Microsoft’s directory service that manages users, computers, and other resources within a Windows domain network. Originally released with Windows 2000 Server, it provides authentication and authorization services, enabling administrators to assign policies, deploy software, and apply critical updates across an organization. Active Directory uses a hierarchical structure of domains, trees, and forests, storing information about network objects in a centralized database that can be queried and managed through various tools and protocols including LDAP.

 

Last Updated: November 25, 2025

Active Directory Replication

The multi-master process that propagates directory changes between domain controllers using update sequence numbers...

Last Updated: November 25, 2025

Domain Controller

A Windows Server that stores a copy of the Active Directory database and responds...

Last Updated: November 25, 2025

Entra Connect Sync

A Microsoft tool that synchronizes on-premises Active Directory objects, attributes, and (optionally) password hashes...

Last Updated: November 25, 2025

Flexible Single Master Operations (FSMO) Roles

Five specialized roles—Schema Master, Domain Naming Master, Infrastructure Master, PDC Emulator, and RID Master...