What is the difference between cloud storage and cloud backup?
Cloud storage (Dropbox, Google Drive, pCloud) syncs a folder across your devices: change or delete a file anywhere and that change replicates everywhere. Cloud backup (Backblaze, IDrive) automatically copies everything on your computer and keeps old versions, so you can go back to before a mistake, a theft, or a ransomware attack. Storage is for access; backup is for recovery.
The confusion is understandable because both put your files on someone else’s servers. The difference is the direction of trust. A sync service faithfully mirrors your working life: every edit, every deletion, every encryption by malware syncs outward within seconds. It protects you against a lost laptop, but not against yourself or an attacker, because the cloud copy is only as healthy as your last action.
A backup service points the other way: it watches your machine and continuously archives what it sees, keeping versions going back days or months. Delete a folder accidentally and the backup still holds yesterday’s copy. Ransomware encrypts your documents and the backup holds the un-encrypted versions from before the attack, which is why security agencies like CISA put versioned backups at the center of ransomware defense.
Most people discover they want one of each. A typical sane setup: a sync drive (pCloud, Google One, Sync.com) for the working files you touch across devices, plus a true backup (Backblaze or IDrive) silently archiving the whole machine. The combination follows the classic 3-2-1 rule and costs less per month than two streaming subscriptions. What we warn against is the common middle path: believing the sync drive IS the backup, until the day it faithfully syncs your disaster.