Tools used for synchronization
The following article briefly describes the Microsoft tools that current exist today for synchronization.
List of tools
Cloud sync and the provisioning agent - Microsoft Entra Cloud Sync is the newest offering from Microsoft designed to meet and accomplish your hybrid identity goals for synchronization of users, groups, and contacts to Microsoft Entra ID. It uses the light-weight provisioning agent and is fully configurable via the portal. For more information, see What is cloud sync? and What is the provisioning agent?
Connect sync - Microsoft Entra Connect is an on-premises Microsoft application designed to meet and accomplish your hybrid identity goals. For more information, see What is Microsoft Entra Connect?.
Microsoft Identity Manager with the Graph connector - Microsoft's on-premises identity and access management solution that provides advanced inter-directory provisioning to achieve hybrid identity environments for Active Directory, Microsoft Entra ID, and other directories. For more information, see Microsoft Identity Manager. MIM is slowly being deprecated and should only be used in advanced scenarios. For more information, see Deprecated Features and planning for the future
ECMA Host connector - The ECMA host works with the provisioning agent to provision and synchronize users from the cloud into on-premises applications such as SQL and LDAP. For more information, see Microsoft Entra on-premises application identity provisioning architecture and What is the provisioning agent?
Selecting the right tool
Each of these tools can accomplish similar results. So selecting the right tool is essential. For most scenarios, cloud sync is going to be the recommended tool. Then connect sync and for advanced/complex scenarios, MIM. For on-premises applications, the ECMA Host would be the preferred tool. For more information, see the supported sync scenarios table. To determine which tool is right for you, you should use the wizard at the Choosing the right sync tool site.