You are the Office 365 administrator for your company. You manage an on-premises Microsoft Exchange Server 2003 environment that has 500 users and an externally-hosted Exchange environment that has 500 users. The hosted Exchange environment does not allow Outlook Anywhere connectivity. You do not have administrative access to all mailboxes in the hosted environment

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You are the Office 365 administrator for your company. You manage an on-premises Microsoft Exchange Server 2003 environment that has 500 users and an externally-hosted Exchange environment that has 500 users. The hosted Exchange environment does not allow Outlook Anywhere connectivity. You do not have administrative access to all mailboxes in the hosted environment.

You plan to migrate and consolidate both environments into Office 365.

You have the following migration requirements:

Migrate on-premises mailboxes in batches by department.

Migrate email, calendar, and contact items from the on-premises environment.

Migrate only email from the hosted environment.

In the table below, identify the migration type that must be used for each environment. Make only one selection in each column. Each correct selection is worth one point.

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Answer:

For the migration of the on-premise Exchange 2003 mailboxes, we can use a staged migration.

In a staged Exchange migration, mailboxes in your on-premises Exchange organization are migrated to Exchange Online in batches. A staged Exchange migration is a good option if your current on-premises email organization and migration goals meet the following conditions:

For the migration of the hosted Exchange mailboxes, we can use an IMAP migration.

In an IMAP migration, the contents of users’ mailboxes on an IMAP messaging system are migrated to their Exchange Online mailboxes. Here are some requirements and considerations for using an IMAP migration:

References: https://technet.microsoft.com/en-us/library/jj863291(v=exchg.150).aspx