I have always used my Mac/iTunes to back up iOS devices.
One benefit I see is that my Mac Time Machine solution will backup the contents of the computer, including the iOS backups – I imagine that as creating something similar a to snapshot history of the iOS devices (assuming one can navigate to earlier Time Machine snapshots, and extract & restore the iOS backups therein).
Recently, Apple seems to have improved its iCloud Backup solution. Does Apple provide snapshot histories of iOS backups, or only the latest backup image?
Best Answer
There used to be a statement in the iCloud Terms and Conditions Version from March 1, 2017 (Internet Archive Link) that "iCloud will store your last three backups" (for a device).
However, this statement has been removed as of 2020. The Terms now only say that "If a device has not backed up to iCloud for a period of one hundred and eighty (180) days, Apple reserves the right to delete any backups associated with that device." (current iCloud Terms and Conditions).
Speaking from experience, iCloud does sometimes keep multiple backups for a single device, but as far as I know there is no way to control this behavior.
If you like to keep a snapshot history of your iCloud backups, I'd recommend to continue backing up using your Mac.