In the hosting field, cloud architecture refers to using different web servers for each and every service that is a part of the hosting service. In other words, your files, databases and emails will not run on the exact same machine, but on separate ones. Such a configuration leads to higher uptime and improved overall performance since only one type of system processes will work on the server, so the resources will be utilized as good as possible. A number of companies nowadays promote their cloud services, but what they provide is not genuine cloud architecture for the reason that the web hosting control panels they use are not designed to function with anything different from a single server. When everything runs on one machine, a trouble with a single service could take the server offline. In this light, when you are searching for cloud hosting, you should check if the service you'll get is in fact a cloud one or if this is a marketing trick.