A Microsoft 365 administrator is planning to migrate a large number of user mailboxes from an on-premises Exchange Server to Exchange Online. During the migration, users must be able to seamlessly access their mailboxes without interruption. After the migration, all mail flow should be directed to Exchange Online. Which type of migration should the administrator choose?
- AIMAP migration
- BHybrid migration (Minimal Hybrid or Full Hybrid)
- CCutover migration
- DStaged migration
Show answer & explanationAnswer & explanation
Correct answer: B. Hybrid migration (Minimal Hybrid or Full Hybrid)
Hybrid migration (Minimal Hybrid or Full Hybrid) allows for a seamless coexistence between on-premises Exchange and Exchange Online, enabling mailbox moves with minimal downtime and ensuring mail flow is directed to the correct location during and after the migration. This option specifically addresses the no-interruption requirement.
Why the other options are wrong
- A. IMAP migration only migrates email items, not calendars, contacts, or tasks, and is not suitable for full mailbox moves without interruption.
- C. Cutover migration has significant downtime, migrating all mailboxes at once, which violates the 'no interruption' requirement.
- D. Staged migration supports moving mailboxes in batches but is primarily for Exchange 2003/2007 and can still involve some interruption in the cutover phase.
Exchange Hybrid Deployment
A configuration that allows an organization to extend the control and management of an on-premises Exchange organization to the cloud, enabling seamless mailbox moves and integrated mail flow between on-premises and Exchange Online.
- Enables seamless mailbox migration with minimal downtime.
- Maintains unified directory and mail flow.
- Supports coexistence of on-premises and cloud mailboxes.
Memory trick: Hybrid migration is the smooth bridge for your email, connecting on-prem to the cloud without a single bump.