This add-on allows your backups to be stored on your Microsoft Azure (blob storage) account (not to be confused with Microsoft OneDrive).
For the very best value, Updraft Premium includes this, plus every other Add-On (with unlimited licences) at a significant discount. Or buy Add-On licences here for the number sites you want it for.
Microsoft Azure settings:
This purchase includes access to support and updates for 1 year, and will renew automatically.
Note: Automatic renewals ensure your UpdraftPlus is always compatible with the latest version of WordPress. It means regular updates, new features and support when you need it. You can cancel at any time.