We have about 10 fairly large (100 GB - 200 GB) site collections on SharePoint 2016 and we need to move these into another farm in another company. I know with database detach/attach and site collection backup/restore options the version/CU of SharePoint matters. If we can get those to match properly, is there a way to map users to a new domain?
I know that migration tools can do this with basically a CSOM approach, but it seems that a content database detach/attach may be the quickest option if I can overcome the user mapping complication.