We have Exchange 2010 on-premises for our organization emails. Now we plan to migrate to Office365. The plan is to migrate all the mailboxes to cloud while keeping Active directory synchronization enabled (The on-premises setup will be remove).

Hybrid deployment should be used if both on-premises and cloud bases servers will be used so Cutover Exchange Migration suites for this operation. But the tutorials I have gone through say that Cutover Exchange Migration will fail if Active directory is synchronized before the migration.

My questions are

1: While migrating from Exchange 2010 to Office365, can we sync the active directory after the migration? Will we be able to manage users created by Cutover migration process?

2: Can we use Hybrid Deployment in this scenario and then remove our on-premises exchange server?