Azure AD Connect (also known as AD Sync) is a Microsoft tool that enables organizations to integrate their on-premises directories, such as Active Directory (AD), with Azure Active Directory (Azure AD). This synchronization enables a seamless hybrid identity solution, allowing users to use a single set of credentials to access both on-premises and cloud-based services like Microsoft 365.
Why Use Azure AD Connect?
Organizations with legacy infrastructure still need to maintain their existing Active Directory setups. At the same time, many are adopting cloud services for flexibility and scalability. Azure AD Connect acts as the bridge between these environments, ensuring user identities and credentials remain consistent and secure across both.
Key Features of Azure AD Connect
- Directory synchronization: Sync users, groups, contacts, and passwords from on-premises AD to Azure AD.
- Single sign-on (SSO): Enable seamless sign-on experiences for users across Microsoft 365 and other Azure services.
- Password hash synchronization: Ensures passwords are synchronized securely to Azure AD.
- Federation support: Supports Active Directory Federation Services (AD FS) for organizations needing advanced authentication scenarios.
- Health Monitoring: Azure AD Connect Health provides monitoring and analytics to keep sync services healthy.
How It Works
- Install Azure AD Connect on a domain-joined server.
- Configure synchronization options, such as filtering specific organizational units (OUs).
- Choose authentication methods: Password hash sync, pass-through authentication, or federation.
- Monitor sync status and troubleshoot issues using the Azure AD Connect Health dashboard.
Azure Active Directory Connect (AD Sync): Bridging On-Premises and Cloud Identity (F.A.Q)
Do I need Azure AD Connect for Microsoft 365 if I already have on-prem AD?
Yes, Azure AD Connect is necessary to synchronize users and passwords from your local AD to Azure AD for Microsoft 365 services.
Is Azure AD Connect free?
Yes, Azure AD Connect is a free tool provided by Microsoft.
Can I filter which users or groups are synced?
Yes, you can use OU-based, domain-based, or attribute-based filtering.
How often does Azure AD Connect sync?
By default, it syncs every 30 minutes, but this can be customized.
