These email and announcement banner templates are to promote adoption of the new cloud products before and during the launch of your migration. These email templates are not to drive awareness of the migration itself. At this point in the process, you should have already communicated about the migration with your teams during the previous phases (assess, plan, prep, test, and/or migrate). At a minimum, one month prior to launch, your users should be aware that a migration is happening, when it is happening, and why. For guidance on what to communicate during the earlier phases, please reference Cloud migration toolkit.