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    Home > Perform Exchange On-Premises Migrations > Overview

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    Perform Exchange On-Premises Migrations

    Exchange On-Premises Migration allows you to migrate user/resource/shared/archive mailboxes from Exchange On-Premises to Exchange Online.

    To understand the supported and unsupported elements in the migration, you can refer to the .

    *Note: If your environment uses the Exchange hybrid deployment, each mailbox in this environment only exists in Exchange On-Premises or Exchange Online. If you want to use Fly to migrate mailboxes from Exchange On-Premises to Exchange Online within this Exchange hybrid environment, and keep the email addresses the same as the source after the migration, you need to make sure these mailboxes exist in both Exchange On-Premises and Exchange Online environments before the migration. Also, note that this will result in the following issues:

    - If the MX records are managed in Exchange On-Premises environment, emails sent from external users can only be received by mailboxes in the Exchange On-Premises environment. - If the MX records are managed in Exchange Online environment, emails sent from external users can only be received by mailboxes in the Exchange Online environment.

    Complete the following steps in sequence to perform Exchange On-Premises migrations.