CentOS is amongst the most preferred Linux-based server Operating Systems nowadays. It's used by numerous web hosting providers, because it is very stable, secure and reliable, not to mention that it can be customized freely, since it's an open-source Operating System. CentOS is used for production servers, as it's also very fast and takes negligible system resources. Furthermore, you'll be able to set up and run any kind of web app, provided that it can function on a Linux computer system. If you use a CentOS-powered server, you're able to modify any part of your Operating System in accordance with your requirements. The fact that CentOS is absolutely free does mean that you will have to pay just for your server, and not for any license fees, which will reduce your overall expenses. A huge group of developers and users stands behind CentOS, therefore if you ever experience any kind of problems, or you are simply not sure how to perform a specific task, you will be able to find a solution right away. An important advantage of the OS is also the fact that each and every version is officially supported and updated for no less than ten years, which means that you will always have a secure and reliable software environment.