CentOS is among the most preferred Linux-based server Operating Systems today. It's used by countless website hosting service providers, because it is very stable, reliable and secure, not to mention that it is freely customizable, because it is an open-source Operating System. CentOS is used for production servers, as it's also very quick and takes minimal system resources. Furthermore, you can install and run any web app, as long as it can run 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 requirements. The fact that CentOS is provided for free does mean that you'll have to pay just for your server, but not for any kind of license fees, which will reduce your overall expenses. A huge community of developers and users stands behind CentOS, therefore if you ever have any kind of problems, or you are simply unsure how to perform a particular task, you can find a solution in no time. An important advantage of the OS is also the fact that every release is officially supported and updated for no less than 10 years, so you'll always have a secure and reliable software environment.