
feok4 (feok4) asked a question.
O365 Tenant to Tenant migration
Hi all - we're about to do a o365 tenant to o365 tenant migration and use Okta for SSO/WDS-Fed with provisioning. Has anyone gone through this before and, if so, do you have a list of steps?

Hi Jeff,
We have done several O365 to O365 migrations now and have found the below to work effectively.
Hope you find this helpful! 😀
Kind Regards,
Tom
Thanks Tom. We have the steps for the migration down pat, which you outlined above. My question was more on the best way to root the domain out with Okta in place for SSO and provisioning. We've done several migrations previously and successfully but were only dealing with 20-50 users. However, we now need to migrate ~450 user mailboxes to a new tenant. Here is what we're thinking:
(1) Block sign in to O365 for all users
(2) Convert the O365 Okta app from WS-Fed to SWA
(3) Convert all users names to the onmicrosoft.com address and remove the domain.com from the SMTP/Proxy addresses
(4) Complete migration of mail
(5) Create new O365 app in Okta with WS-Fed and Provisioning
(6) Assign users to app
(7) Test SSO
These are not inclusive but gives a high level on what we're trying to do. My concern is the WS-Fed to SWA... I need to be able to manipulate the O365 objects in the cloud. Any thoughts?
Jeff