CentOS is among the most widely used Linux-based server Operating Systems nowadays. It is preferred by lots of hosting suppliers, because it's very stable, secure and reliable, not to mention that it is freely customizable, since it's an open-source Operating System. CentOS is used for production servers, for the reason that it's also very fast and takes negligible resources. Also, you're able to set up and run any kind of web app, as long as it can operate on a Linux equipment. If you use a CentOS-powered server, you're able to edit any part of your Operating System in accordance with your needs. The fact that CentOS is absolutely free also means that you'll need to pay only for your server, but not for any kind of license fees, which will lower your overall expenses. A huge group of developers and users stands behind CentOS, therefore if you ever encounter any kind of problems, or you are simply not sure how to perform a certain task, you will be able to find a solution quickly. An important advantage of the OS is also the fact that every version is officially supported and updated for a minimum of ten years, so you will always have a secure and stable software environment.