Learning iCloud Data Management: A Hands-On Guide to Structuring Data for iOS and OS X

Managing Account Changes

Many users use a single iCloud account on all of their devices. The only time they change their iCloud account is when they get a new device—and, in many cases, that is handled automatically during setup.

Other people routinely use several iCloud accounts. One may be for home and the other for work. You, as a developer, are likely to have separate iCloud accounts for your personal use, your developer work, and perhaps yet another for your iBooks Author projects.

When you are developing an iCloud app, you have to be able to handle both scenarios. That basically means being able to handle account changes: the situation with a single iCloud account that doesn’t change is a dramatic simplification of the multiple account ...