CentOS is an abbreviation for Community Enterprise OS. This is one of the top Linux releases for servers and it's recognized as being one of the most stable and risk-free Operating Systems on the market. CentOS is open-source software, so you'll be able to personalize it in any way you see fit, adding and removing packages or changing the program code of all of them. It's also free to distribute and use, so you will not have to pay any kind of license fees, which means that the overall price that you will have to pay for a server running CentOS will be cheaper as compared to the price for a server running an alternative OS. What makes CentOS stand out among other Linux distributions is its huge developer community, which will help you find the reply to any kind of question or problem you have. What's more, each version that's released officially is supported for ten years, that's is much longer than with any other OS. What this means is regular security and stability updates that provides a reliable software environment for all your web apps in the long run.