Moving your existing mailbox data is crucial to the success of any migration to Exchange Online. It'is important to consider the available migration options that you can use and to choose the best migration option for your users.

To support this effort, this module examined the options that are available for migrating email to Exchange Online. These options include:

  • Cutover migration
  • Staged migration
  • Minimal hybrid configuration / Express migration
  • Full hybrid configuration
  • IMAP migration
  • PST migration
  • Cross-tenant migration
  • Third-party migration

This module summarized each of these migration and coexistence options. It also recommended the appropriate scenarios in which each option should be used.