When it comes to Internet hosting, cloud architecture refers to using an individual server for each part of the web hosting service. Such a setup leads to improved performance since one machine will be used only for file storage, another only for running databases, and so on, thus different system processes will not run on the same machine. The latter will reduce the probability of system errors significantly and will allow your sites to operate faster, not mentioning the higher uptime. When you're looking for this kind of service, you should make certain that you will really find it since lots of companies advertise cloud internet hosting packages, yet the control panels they use are not designed to function in a true cloud and can function only on one server. The issue with using just a single machine is that in the event that one service goes down or generates high load, the whole server will almost certainly go offline, so your websites will no longer be accessible.