Question
Are there any special requirements for migrating to Office 365 (O365) EXO?
Answer
Here's a list of product requirements:
Outlook Professional Plus 2013 - with latest updates.
O365 setup is the same as a Exchange on-premise setup, except matching and importing are performed using only PowerShell.
Full Access is required for the account or account group. Read this KB article for information on how to apply to Office 365. How to Create a Security Group in Office 365
For 'Matching' to be successful, the migration account must be in the "Organizational Management" group in Exchange Online
Microsoft Office 365 has a limitation of two simultaneous connections per admin id (migration account).
When setting up a migration farm ensure that you have multiple migration accounts (admin ids). Ideally when using CMT for Exchange, setup a control center and 20 migration workstations per Migration Farm.
You will need a total of 11 migration accounts,
One for the Migration Control Center for Match purposes.
The other 10 accounts for setting up the Migration workstations on the farm (two workers per account).
This ensures that at any point of time all 20 workstations can be used for migration to Office365.
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