CentOS is one of the most widely used Linux-based server Operating Systems nowadays. It's used by a number of website hosting service providers, because it is very stable, secure and reliable, not to mention that it is freely customizable, because it is an open-source Operating System. CentOS is used for production servers, as it is also very fast and takes negligible resources. On top of that, you can set up and run any web app, as long as it can function on a Linux computer system. When you use a CentOS-powered server, you are able to edit any part of the Operating System in accordance with your preferences. The fact that CentOS is free also means that you'll have to pay for your server, and not for any license fees, which will minimize your overall expenses. A huge group of developers and users stands behind CentOS, and if you ever have any problems, or you're simply not sure how to perform a specific task, you can find a solution very quickly. A significant advantage of the OS is also the fact that every single release is officially supported and updated for a minimum of 10 years, so you will always have a safe and stable software environment.