Originally Posted By: artie505
I'm not even certain that his obsession with iCloud is realistic…in the sense that I think he wants to create something that would be stored in the cloud but would NOT also be on his laptop, i.e. he wants to treat the cloud as if it were an external drive. Is that possible?

I have a number of files on my iCloud Drive that were
  • saved to iCloud from an iOS or MacOS app
  • moved or copied to iCloud from a drive on my Mac
  • are transparently synched to iCloud either from iOS or MacOS
  • exist only on iCloud but are opened and changed from iOS or MacOS apps
  • my Desktop, Documents folder, iTunes, photos, keychain, contacts, are all primarily resident on iCloud
  • in High Sierra I can open .dmg files stored on the iCloud Drive.
Originally Posted By: keys
Can one put a word document there?
Yes.

In other words iCloud is effectively an external drive connected to my Mac, iPad, and iPhone effectively the same as shared drives or folders on my local server.

If we knew what it was we were doing, it wouldn't be called research, would it?

— Albert Einstein