A cloud Internet hosting service means that every single part of your world-wide web presence will be maintained by an independent server. For instance, your files and databases will be maintained by separate machines and since just one kind of processes will run on a server, every machine will perform better and will use its system resources to the fullest. Whether you will get a genuine cloud service or not also depends on the control panel that you'll use to control your account. Because most control panels are designed to work on a single server, they can't work on a cloud platform whatever a given web hosting provider could advertise. If one service stops responding, the entire server may go offline, so your Internet sites won't be accessible. This is the reason why you should check what service you'll actually receive in case you are looking for cloud hosting before you buy anything.