Those services do store files in the cloud, but they aren't designed to automatically protect all important documents and media files, let alone system files. (pcmag.com)
Essential for managing a website, but also for storing files on the cloud and a range of other uses. (smallbusinessesdoitbetter.com)
So while they're good for storing files, we would only recommend running software from the boot drive. (computershopper.com)