For this task, you create a migration file that contains a list of mailboxes to migrate to %BRAND_OFFICE_365_SHORT%. Because ...

For this task, you create a migration file that contains a list of mailboxes to migrate to %BRAND_OFFICE_365_SHORT%. Because the easiest way to create the migration file is to use an %BRAND_EXCEL_SHORT% spreadsheet and save it as a CSV file, we use %BRAND_EXCEL_SHORT% in these instructions.