Microsoft Entra ID
Microsoft's cloud identity and access management service, formerly Azure Active Directory.
Microsoft Entra ID (formerly Azure Active Directory) is Microsoft’s cloud-based identity and access management service, providing authentication, single sign-on (SSO), and authorization for Azure resources, Microsoft 365, and thousands of third-party SaaS apps. It manages users, security groups, and app registrations and enforces policies such as multi-factor authentication and conditional access. For AZ-900, remember it is not a direct replacement for on-premises Windows Server Active Directory Domain Services: it uses modern protocols like OAuth 2.0, OpenID Connect, and SAML rather than Kerberos and LDAP, and is built for cloud and web scenarios rather than domain-joined machines and Group Policy. Organizations running both typically synchronize them with Microsoft Entra Connect.
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