Which type of Office 365 on-boarding migration is not supported by Exchange Server 2003?

Which type of Office 365 on-boarding migration is not supported by Exchange Server 2003?

• Cutover Migration
• Remote Move Migration
• Staged Migration
• IMAP Migration

EXPLANATION

The migration type to use depends on your existing email system, how many mailboxes you want to migrate, and whether you plan to maintain some mailboxes in your on-premises organization or migrate them all to the cloud. You'll also want to consider how long the migration will take and whether user identity will be managed in your on-premises organization or in Office 365.
The following systems are supported by each migration type:

• Remote move migration (supported by Exchange Server 2010 and later versions)
• Staged migration (supported by Exchange Server 2003 and Exchange Server 2007 only)
• Cutover migration (supported by Exchange Server 2003 and later versions)
• IMAP migration (supported by Exchange {2003 - Current} and other email systems)

Click here to learn more: https://technet.microsoft.com/en-US/library/ms.exch.eac.LearnMoreMigrationType(EXCHG.150).aspx?v=15....