When you’re migrating from one computer to another, or from a mobile device to a Mac, the goal is to get up and running on your new Mac with the minimum of fuss in the shortest possible time. Apple goes out of its way to make that process as fast and as fuss-free as possible, and for computer-tocomputer transfers it does that via an app called the Migration Assistant.
The Migration Assistant is on every new Mac and can be downloaded to Windows PCs too, and its job is to transfer all the important things from your old computer to your new Mac. It will copy all of your documents and apps, your user accounts and your settings from one Mac to another, and it does a great job of it.