CentOS is among the most widely used Linux-based server Operating Systems available on the market. It's used by lots of hosting suppliers, because it is very stable, reliable and secure, not to mention that it is freely customizable, since it is an open-source OS. CentOS is used for production servers, as it is also really quick and takes negligible system resources. Also, you will be able to install and run any kind of web app, as long as it can run on a Linux computer system. When you use a CentOS-powered server, you're able to modify any part of your Operating System according to your specifications. The fact that CentOS is provided for free does mean that you'll have to pay just for your server, and not for any license fees, which will lower your overall expenses. A huge group of developers and users stands behind CentOS, so that in case you ever encounter any kind of problems, or you're simply not sure how to perform a certain task, you'll be able to discover a solution in no time. An important advantage of the OS is also the fact that every version is officially supported and updated for no less than 10 years, so you will always have a safe and stable software environment.