Backing up your site to the cloud is the first step to backup autonomy and data safety. However, you still have to login to your site's back-end to take a cloud backup. This is not ideal. What about when you are on the road for days, without reliable Internet connection? What about not wanting to go through this daily drill?
With Akeeba Solo / Akeeba Backup Professional you have three different options to automate your backup! Two of them are designed to utilize your host's CRON scheduling, i.e. your host's ability to run specific commands on his server, on a predefined schedule. This would mean that your backup is fully automated; you sleep at night, your site backs up itself.
You can read more about the scheduling options in the Automating your backup section of this documentation.