Simply put, a backup is merely a copy, or mirror image, of your data. Making a backup copy (or better yet, multiple copies) of your data is the best way to ensure it will not be lost due to computer failures, hackers or other disasters.

To backup your files with OneDrive, you'll need to turn on the feature in the "Backup" tab of your OneDrive settings.; OneDrive lets you automatically backup files from your PC's Desktop ...

While it’s more convenient to use iCloud to back up your iPhone, you can back up your phone to your computer using iTunes and retain full control of your data backups.