We are looking for a way to migrate a part of our users to a new O365 tenant with the least possible downtime.
Currently we have about 250 of the 600 users that we want to migrate to a seperate tenant.
All users will stay in the same domain.
ADFS (will be replaced by SSSO on new tenant)
To be migrated:
Teams (incl. conversations)
Resources (meeting rooms)
The to be migrated users have a different UPN and email address.
We could setup a second AD Connect and filter on UPN, but I'm wondering if all the above can be done with no downtime and if this would cause issues later on.