There's a new
iCloud sync feature that takes the stuff that used to live only on each individual device and sync them across everything.
Not exact matches
For Apple's
iCloud, you can currently access these photos in the Photos app on an iOS device, in iPhoto on a Mac, or via the Photos
sync feature in the
iCloud control panel for Windows.
Search
features allow you to easily find what you need, and
iCloud and Dropbox support allows you to efficiently
sync your data.
«
iCloud sync for iMessage as well as 3D Touch App Switcher gesture
features have also made a comeback with iOS 11.1 beta 1 release.»
When you
sync to another new device, such as an iPhone,
iCloud will automatically
sync all your conversations (or it will at some point in the future - this
feature hasn't arrived yet).