What should you create first?

Your company has a Microsoft Exchange Online tenant named contoso.com.

The company acquires a company named ADatum Corporation that uses a third-party IMAP email service named adatum.com.

You plan to migrate the mailbox content of adatum.com to contoso.com.

You need to connect Microsoft 365 to the IMAP email service.

What should you create first?
A . a new organization relationship
B. a new migration endpoint
C. a new remote domain
D. a new staged migration batch

Answer: B

Explanation:

Reference: https://docs.microsoft.com/en-us/exchange/mailbox-migration/migrating-imap-mailboxes/migrating-imap-mailboxes