A NAS and a cloud backup solve different halves of the same problem. Here’s which you need — honestly, most people want both.
People ask “NAS or cloud?” as if it’s either/or. It usually isn’t.
For most people, the best setup is a NAS and a cloud backup — that’s literally the 3-2-1 rule.
Start with whichever fits now: a cloud backup is the fastest way to be safe today; add a NAS when you want fast local restores and a private cloud. Together they cover you against almost anything.