CentOS is an abbreviation for Community Enterprise OS. This is one of the best Linux distributions for servers and it's recognized as being one of the most dependable and secure Operating Systems on the market. CentOS is open-source software, which means that you will be able to customize it in any way you see fit, adding and removing packages or changing the code of all of them. It is also free to distribute and use, so you won't need to pay any license fees, meaning that the total price that you will have to pay for a server running CentOS will be lower as compared to the price for a server running another OS. What makes CentOS unique among other Linux releases is its huge developer community, which will help you discover the answer to any question or problem you have. Furthermore, each version that is released officially is supported for ten years, that's is longer than with any other operating system. This means routine safety and stability updates that will provide a stable software environment for your web apps in the long run.