There is a lot of confusion regarding sync and backup. I find that there are still many people setting up their devices to sync critical data with services like Google Drive, Onedrive, Dropbox, Box, etc. thinking that their data is safe and sound in the cloud. The primary purpose of these services is to give you the ability to access your files and folders on any device, anywhere and anytime. If this is how you have set up your “backup” then I’d like to inform you that you have NO backup and that you are at risk of losing all your important information.
Let me tell you why your data is not backed up
Since file sync and sharing services are synchronizing your information to the cloud, everything that happens on your device replicates to the cloud. To give you an example: lets say that your windows device was infected with #ransomware and all the information on your hard drive was encrypted, this means that all your information in the cloud will also be encrypted because your device synchronized to the cloud and there is no way of recovering the data because you do not have a backup.
How you should backup
If you are looking for a solid backup then you should be using a cloud backup provider that can backup your information automatically, maintaining 3 copies of your information at all times i.e. the main copy, a local copy, and an offsite copy in the cloud. Rapid recovery must be an important aspect of the solution.
Clarification of key terminology
Cloud is a place. Sync and Backup are services that provide different outcomes but make use of the cloud.