Depending on how many users you're migrating to %BRAND_OFFICE_365_SHORT%, you may need to run several migration batches to ...

Depending on how many users you're migrating to %BRAND_OFFICE_365_SHORT%, you may need to run several migration batches to complete your staged migration. You can run your batches simultaneously or one by one. Do what is best for your organization and users as you work to complete the migration. Remember, each migration batch has a limit of 2,000 mailboxes.