Can I backup my Dell PC to iCloud?
Can I backup my Dell PC iCloud Drive?
Windows, Windows 10
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Apple offers iCloud Backup for iPhones and iPads but not for Mac computers (or Windows computers).
It is possible to sync data from a Windows computer to iCloud if you use iCloud Drive and/or iCloud Photos in iCloud for Windows.
See: Set up and use iCloud for Windows - Apple Support
Syncing has some of the benefits of a backup (and the benefit of being offsite) but is not the same as a backup. Major differences include the fact that not everything on your computer can be synced and the fact that if you delete something, accidentally or otherwise, there is only a limited time period (30 days in most cases) during which it can be recovered.
And more information on syncing in:
Set up and use iCloud Photos - Apple Support
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