
Explanation:
Creating an Always On availability group on VM1 would not be necessary, as you already have an availability group (AG1) in place on your on-premises SQL Server instances.
By adding a secondary replica to AG1, you can provide a copy of DB1 that can be used for the migration. This will allow you to minimize downtime on DB1 by performing the migration on the secondary replica, while the primary replica remains available for use.
While using Azure Migration can simplify the migration process, it may not necessarily minimize downtime. You may still need to plan for an appropriate maintenance window to complete the migration with minimal disruption to your application.