Time Machine backup to iCloud

ksoudani wrote:

Can I use Time Machine to back up my computer to Apple iCloud?

No, Backup disks you can use with Time Machine lists disks which can be used for Time Machine. ICloud is not listed as an option. It is a common misconception that iCloud is a backup option, but in reality it is primarily a syncing option.

Only iOS devices are available for backup, as explained in How to back up your iPhone or iPad with iCloud.

ksoudani wrote:

Thank you.

what is the difference between syncing and backing up? Can ICloud sync’s be used to restore a computer’s memory?

Please refer to What's the difference between a Sync and … which although dated provides a pretty good summary of the differences.

Another good reference is Intro to syncing your Mac and your devices.

Also try Cloud storage vs cloud backup vs cloud sync: what's the difference?