Azure Active Directory Explained

Azure Active Directory (Azure AD), now part of Microsoft Entra ID, is Microsoft's cloud-based identity and access management service. It helps employees sign in and access resources such as Microsoft 365, internal apps, and thousands of third-party SaaS applications.

Core Capabilities

• Single Sign-On (SSO) — one set of credentials across many applications
• Multi-Factor Authentication (MFA) — an extra verification layer beyond passwords
• Conditional Access — policies that grant or block access based on risk signals
• Identity Protection — detects and responds to suspicious sign-in behavior

Key Objects in Azure AD

• Users and Groups
• App registrations and enterprise applications
• Roles and administrative units for delegated management
• Devices registered or joined to the directory

Why Organizations Rely On It

• Centralized identity governance across cloud and on-premises resources
• Hybrid identity through Azure AD Connect syncing with on-prem Active Directory
• Strong developer support via OAuth 2.0 and OpenID Connect