CentOS is among the most popular Linux-based server Operating Systems on the market. It's employed by a lot of hosting service providers, as it's very stable, reliable and secure, not to mention that it is freely customizable, because it is an open-source OS. CentOS is used for production servers, because it's also very fast and takes negligible system resources. On top of that, you'll be able to set up and run any web app, as long as it can function on a Linux device. When you use a CentOS-powered server, you're able to change any part of the Operating System in accordance with your preferences. The fact that CentOS is absolutely free does mean that you will need to pay only for your server, and not for any kind of license fees, which will cut down your overall expenses. A huge team of developers and users is behind CentOS, therefore if you ever have any kind of problems, or you are simply not sure how to perform a certain task, you will be able to find a solution in no time. An important advantage of the OS is also the fact that every version is officially supported and updated for no less than 10 years, so that you will always have a safe and stable software environment.