A cloud Internet hosting service means that every single part of your world-wide web presence will be handled by a different server. For instance, your files and databases will be managed by different machines and since only one kind of processes will run on a server, every single machine will perform better and will use its system resources to the highest. Whether you'll get a genuine cloud service or not also depends on the control panel that you will use to handle your account. As most control panels are designed to operate on a single server, they cannot work on a cloud platform whatever a given Internet hosting provider may advertise. In case one service stops responding, the entire server may go offline, so your websites won't be accessible. This is the reason why you should check what service you'll actually receive if you are looking for cloud hosting before you order anything.