One of the surprise exhibitors at RootsTech was the cloud backup service Backblaze. They even sponsored the product demo theatre with soft comfy armchairs and candy.
I'm a Backblaze subscriber. As far as I know it works for me. Fortunately I've never had to retrieve anything from the backup in earnest. On the couple of occasions I've tested the backup file it was there.
Apparently World Backup Day is March 31, who knew? New Mac and PC users can sign up to receive 3 months of the Backblaze online backup service for free (a $15 value) Until the end of day (PDT) on March 31st. Check out here to learn more and sign up.