CentOS is amongst the most widespread Linux-based server Operating Systems today. It is used by a number of hosting service providers, since it's very stable, secure and reliable, not to mention that it is freely customizable, since it is an open-source Operating System. CentOS is used for production servers, as it is also very fast and takes negligible resources. Furthermore, you're able to set up and run any web app, provided that it can function on a Linux computer system. When you use a CentOS-powered server, you're able to edit any part of your Operating System according to your needs. The fact that CentOS is free of charge does mean that you will need to pay just for your server, but not for any kind of license fees, which will decrease your overall expenses. A huge community of developers and users is behind CentOS, and in case you ever have any kind of problems, or you are simply not sure how to perform a particular task, you'll be able to find a solution quickly. A significant benefit of the OS is also the fact that each release is officially supported and updated for at least 10 years, so that you'll always have a safe and stable software environment.