Forum Discussion
Migration Challenge
What Dean meant with the FastTrack program is that you can involve Microsoft and get guidance/assistance from them for the actual migration. For free. So definitely look at that option.
Anyway, with Exchange 2007 you are definitely not limited to only Cutover. Staged migration will also work, or you can even introduce a 2010 server and do a Hybrid. If the accounts are already provisioned in the cloud, you can use the soft-match mechanism to "link" them to on-prem users as detailed here: http://support.microsoft.com/kb/2641663
Just wanted to add to VasilMichev that the number of mailboxes to be migrated (< 2000) is also important. If there are more than 2000 mailboxes then a hybrid approach is suggested. Also check if public folders are being used in your 2007 tenant as well. If so, then you should figure out if you need to migrate these public folders as well.
