![Hybrid Identity features per Active Directory Domain Services Domain Controller Operating System, Domain Functional Level, Forest Functional Level and Schema version - The things that are better left unspoken Hybrid Identity features per Active Directory Domain Services Domain Controller Operating System, Domain Functional Level, Forest Functional Level and Schema version - The things that are better left unspoken](https://dirteam.com/sander/wp-content/uploads/sites/2/2018/02/TableHybridIdentityWindowsServer2008Mixed.jpg)
Hybrid Identity features per Active Directory Domain Services Domain Controller Operating System, Domain Functional Level, Forest Functional Level and Schema version - The things that are better left unspoken
![Domain controller promotion process shows the Windows Server Technical Preview option in the Domain and Forest functional level list - Windows Server | Microsoft Learn Domain controller promotion process shows the Windows Server Technical Preview option in the Domain and Forest functional level list - Windows Server | Microsoft Learn](https://learn.microsoft.com/en-us/troubleshoot/windows-server/identity/media/domain-controller-promotion-windows-server-technical-preview/dc-options.png)
Domain controller promotion process shows the Windows Server Technical Preview option in the Domain and Forest functional level list - Windows Server | Microsoft Learn
![Upgrade Windows Server 2016 Domain Controllers and AD Schema to Windows Server 2019 | Raise Active Directory domain and forest functional levels - .matrixpost.net Upgrade Windows Server 2016 Domain Controllers and AD Schema to Windows Server 2019 | Raise Active Directory domain and forest functional levels - .matrixpost.net](https://blog.matrixpost.net/wp-content/uploads/2021/10/adds001-1.png)
Upgrade Windows Server 2016 Domain Controllers and AD Schema to Windows Server 2019 | Raise Active Directory domain and forest functional levels - .matrixpost.net
![Using NTDSUTIL Metada Cleanup to Remove a Failed/Offline Domain Controller Object. | Chinny Chukwudozie, Cloud Solutions. Using NTDSUTIL Metada Cleanup to Remove a Failed/Offline Domain Controller Object. | Chinny Chukwudozie, Cloud Solutions.](https://chinnychukwudozie.files.wordpress.com/2013/12/ntdshelp.png)