CentOS is among the most widely used Linux-based server Operating Systems today. It's used by numerous hosting providers, as it's very stable, reliable and secure, not to mention that it is freely customizable, because it's an open-source OS. CentOS is used for production servers, because it's also very quick and takes negligible resources. On top of that, you can set up and run any kind of web app, provided that it can run on a Linux machine. When you use a CentOS-powered server, you will be able to modify any part of your Operating System in accordance with your needs. The fact that CentOS is absolutely free does mean that you'll have to pay only for your server, and not for any license fees, that will decrease your overall expenses. A huge team of developers and users is behind CentOS, and in case you ever encounter any kind of problems, or you are simply unsure how to perform a specific task, you can find a solution right away. A significant advantage of the OS is also the fact that every release is officially supported and updated for at least ten years, which means that you will always have a safe and dependable software environment.