In the hosting field, cloud architecture means employing different web servers for each service that is a part of the internet hosting service. In other words, your files, databases and emails will not run on the very same machine, but on separate ones. Such a setup results in higher uptime and better overall performance since only one kind of system processes will work on the server, so the system resources will be utilized as good as possible. Various service providers these days promote their cloud services, but what they offer is not true cloud architecture for the reason that the Internet hosting control panels they use are not designed to operate with anything different from a single server. When everything runs using one machine, a problem with one service may take the whole server offline. In this light, if you are looking for cloud hosting, you should check if the service you'll receive is in fact a cloud one or if it is a marketing trick.