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Microsoft Exchange Server 2013 to Microsoft 365: Hybrid Migration Step-by-Step
Step 1: Verify You Own Your Domain In Microsoft 365.
Step 2: Start The Migration Process.
Step 3: Sync Your Directories To Create Users.
Step 4: Assign Microsoft 365 Licenses To Your Users.
Step 5: Start Migrating User Data

To know more visit https://www.o365cloudexperts.com/blog/exchange-2013-to-office-365-migration/