What is the admin center?
The Microsoft 365 admin center is where you manage your business in the cloud. You can complete such tasks as adding and removing users, changing licenses, and resetting passwords.Source: https://support.microsoft.com/en-us/office/admin-center-overview-fa715fa8-6eda-456d-b177-d1c156edd1b3
Admin center training and resources
365 Training Portal feedback
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