CentOS is amongst the most popular Linux-based server Operating Systems nowadays. It's preferred by countless web hosting service providers, because it is 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, for the reason that it is also very fast and takes minimal resources. In addition, you are able to set up and run any web app, as long as it can function on a Linux machine. If you use a CentOS-powered server, you will be able to modify any part of your Operating System according to your specifications. The fact that CentOS is free of charge means that you'll have to pay for your server, but not for any license fees, that will decrease your overall expenses. A large group of developers and users is behind CentOS, so if you ever encounter any kind of problems, or you're simply unsure how to perform a certain task, you will be able to discover a solution quickly. A significant benefit of the OS is also the fact that every single release is officially supported and updated for no less than 10 years, so that you'll always have a secure and reliable software environment.