Diagram
A system architecture diagram showing how Microsoft Entra Connect synchronizes on-premises Active Directory to Microsoft Entra ID, which then automatically synchronizes identities to Microsoft Entra Domain Services for legacy app authentication.
Analyze Security Features and Best Practices
Integration and synchronization between Entra ID and Domain Services is seamless and automatic. A single wizard in the Microsoft Entra admin center enables Domain Services for your tenant. After setup, user accounts, group memberships, and credentials are synchronized from Entra ID (or on-premises Active Directory via Microsoft Entra Connect) into the managed domain. This synchronization ensures that corporate credentials remain consistent and that IT teams don't need to manage or patch domain controllers.
Entra Domain Services supports NTLM and Kerberos authentication, enabling Windows-integrated authentication for legacy and modern applications. High availability is built in by deploying multiple domain controllers, often across Azure Availability Zones for extra resilience. Additionally, replica sets can provide geographical disaster recovery, and one-way forest trusts allow secure connections to on-premises domains without extending those domains directly.
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