Migration Manager for Active Directory is an efficient, flexible, and comprehensive solution for restructuring your Active Directory. Migration Manager for Active Directory includes capabilities for “pruning and grafting,” directory redesign, and Active Directory-to-Active Directory migration. In addition, Migration Manager for Active Directory allows migrating user accounts from Active Directory to Microsoft Office 365. With Migration Manager for Active Directory, major changes to your directory structure can be safely managed with no disruption to daily activities.
Migration Manager for Exchange, a companion application to Migration Manager for Active Directory, allows administrators to migrate user mailboxes, public folders, and other Exchange data from one Exchange organization to another in a way that is transparent to the end-users and does not impact user productivity. In addition, Migration Manager for Exchange allows migrating user mailboxes from an on-premises Exchange organization to Microsoft Office 365. Migration Manager for Active Directory and Migration Manager for Exchange are designed to be used together.
Hereafter, unless a specific Exchange version is meant, "Exchange" denotes Exchange 2003, Exchange 2007, Exchange 2010, and Exchange 2013 organizations, servers, mailboxes, etc.
There are many reasons why you might want to—or need to—restructure your Active Directory, as follows:
Changes in your organization can require changes to your Active Directory. Organizational changes might cause you to split or merge forests or domains, or “prune” a portion of your Active Directory and “graft” it back to a different place.
Organizational changes that can impact your Active Directory include:
You might discover that your current Active Directory design does not meet your needs or is not well-suited to your network topology. Perhaps your initial deployment of Active Directory was compromised because of time constraints, limited resources, lack of tools allowing for reconfiguration, or limited information or experience with Active Directory.
Situations that might require you to redesign your existing Active Directory include: