At April 13 the support of DirSync and Azure AD Sync will be ending.
Microsoft previously has offered two synchronization tools for hybrid identity implementation to extend the reach of on-premises identities to cloud services:
- Windows Azure Active Directory Sync (DirSync) for single forest directory implementations
- Microsoft Azure Active Directory Sync (Azure AD Sync) for multi-forest and other advanced capabilities.
Azure Active Directory (Azure AD) Connect now replaces these older tools for all scenarios. DirSync and Azure AD Sync are no longer being updated. They have been deprecated and will not be supported after April 13, 2017. For more information on the transition to Azure AD Connect, please visit the Upgrade Windows Azure Active Directory Sync and Azure Active Directory Sync documentation webpage.
If you want to see how to do an in-place upgrade from DirSync to Azure AD Connect, then see this Channel 9 video:+
Also published on Medium.