Migrating to cloud is the powerful way to keep and access user’s data . Cloud environment offers on demand access to user’s information . You can move on-premise mailbox items emails, contact, calendar, etc., to Online Exchange. Users can access their data on demand. There are different ways for the migration of data from Exchange to Office 365.
1. Cut over migration 2. Staged migration 3. Remote move 4. IMAP Migration Each methods put some limitations over the migration process. So it is better to switch on to third party tool like EdbMails Exchange migration office 365 . The tool helps you to migrate mailboxes from almost all Exchange server versions to Office 365 . No size limitation on the mailboxes.