CentOS is among the most widely used Linux-based server Operating Systems on the market. It's used by a lot of hosting service providers, as it's very stable, reliable and secure, not to mention that it is freely customizable, since it is an open-source OS. CentOS is used for production servers, because it's also very quick and takes minimal system resources. What's more, you're able to set up and run any web app, as long as it can run on a Linux machine. If you use a CentOS-powered server, you will be able to customize any part of your Operating System in accordance with your requirements. The fact that CentOS is free of charge does mean that you'll need to pay for your server, and not for any kind of license fees, which will minimize your overall expenses. A large group of developers and users stands behind CentOS, so if you ever encounter any problems, or you are simply not sure how to perform a particular task, you will be able to find a solution right away. A significant advantage of the OS is also the fact that every version is officially supported and updated for at least 10 years, which means that you will always have a secure and dependable software environment.