A cloud Internet hosting service means that each and every part of your online presence will be maintained by a separate server. For example, your files and databases will be maintained by separate machines and since only one type of processes will run on a server, every single machine will perform better and will use its resources to the fullest. Whether you'll get a genuine cloud service or not also depends on the control panel that you'll use to handle your account. As most control panels were made to operate on a single server, they can't work on a cloud platform regardless of what a given web hosting provider would advertise. In the event that one service stops responding, the whole server could go offline, so your Internet sites won't be accessible. This is the reason why you should check what service you will actually get in case you are looking for cloud hosting before you order anything.