CentOS is amongst the most popular Linux-based server Operating Systems to choose from. It's used by a lot of hosting service providers, because it is very stable, reliable and secure, not to mention that it can be customized freely, because it is an open-source OS. CentOS is used for production servers, for the reason that it's also very fast and takes minimal resources. In addition, you can install and run any kind of web application, provided that it can operate on a Linux device. If you use a CentOS-powered server, you can modify any part of the Operating System in accordance with your specifications. The fact that CentOS is absolutely free does mean that you'll need to pay for your server, and not for any sort of license fees, which will lower your overall expenses. A vast team of developers and users is behind CentOS, so that in case you ever encounter any kind of problems, or you are simply unsure how to perform a certain task, you will be able to find a solution very quickly. A significant advantage of the OS is also the fact that each and every release is officially supported and updated for a minimum of ten years, which means that you'll always have a secure and reliable software environment.