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Migration Assistant is a utility by Apple Inc. that imports users, applications, settings, various files and volumes to a new Macintosh computer from a (presumably) older one. It is found in /Applications/Utilities/Migration Assistant.app.
System Migration Assistant helps get your end-users up and running by quickly and accurately migrating their individual data and settings to their new Lenovo systems, which are then familiar and ready to go. It's ideal for a large corporation moving hundreds of users' data over an enterprise network, or a small business with just a few systems in a peer-to-peer environment.