The first feature I'm going to review is the ability to create and restore backups on your own. Previously you would have had to involve Microsoft to obtain a backup of your CRM organization. Now you can create a backup on demand, although backups are still performed daily, and you can restore a backup at your leisure.
You can manage your backups in the CRM Online Admin Center which you can get to from the Office 365 Admin Center. You can only restore on-demand backups to a sandbox instance. Check out this TechNet article for full details.