With OSX 10.10 Yosemite, Apple has moved iCloud Drive, their Dropbox competitor, to the forefront. Other features include Continuity, the ability to seamlessly switch from editing a file on one’s Mac to an iOS device.
Prior to 10.10, a change was made that abolishes the save/delete “What do you want to do with this file?” prompt when you’d quit a document-based application. Files in open windows were saved to a buried “Saved Application State” directory, and automatically reopened in the same place when you relaunched the app. This enabled restarting without user intervention, quitting apps and automatically restarting them exactly where one left off.
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