Active Directory: the identity backbone of the enterprise
Active Directory (AD) is the foundation of enterprise identity — centralizing how users authenticate, how policy applies, and how access to resources is granted across the network. When it’s current and well-documented, everything built on top of it — mail, file shares, conditional access, single sign-on — inherits that stability.
On-Premises AD ⇄ Entra ID
Directory objects sync from on-premises Active Directory to Entra ID, so users authenticate once and get single sign-on across cloud and on-prem resources — without keeping two identity stores in sync by hand.
Six components, one identity plane — explore each:
Core Infrastructure Roles
Six AD roles working together — search to filter, or scroll to see the whole stack.
Domain Controller
Authenticates and authorizes every sign-in on the network. Fleet upgraded to Windows Server 2025, with functional levels raised where compatible.
AD Domain Services
The primary data store for the directory — every user, group, and computer object — plus the authentication protocols that read and write against it.
Azure Entra ID
Cloud identity and access management, extending on-prem AD into the cloud. Recent work included a 6.3 TB tenant-to-tenant migration covering 270+ users with no loss of access.
Certificate Services
Issues and manages the internal PKI hierarchy — certificates for server encryption, authentication, and signing — tracked so nothing expires unnoticed.
Federation Services
Extends single sign-on to external applications and partner organizations through federated trust, without duplicating credentials.
Rights Management
Applies usage policies and persistent encryption directly to sensitive documents and email, so protection travels with the file even outside the network.
No roles match that search — try a different term, or clear the box to see all six.
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