step-by-step-active-directory-migration

https://blogs.technet.microsoft.com/canitpro/2014/05/27/step-by-step-active-directory-migration-from-windows-server-2008-r2-to-windows-server-2012-r2/

https://www.administrator.de/frage/dc-migration-server-2008r2-2016-317621.html