CentOS is an abbreviation for Community Enterprise Operating System. This is one of the top Linux distributions for servers and it's recognized as being one of the most reliable and safe Operating Systems on the market. CentOS is open-source software, which means that you're able to personalize it in any way you see fit, adding and removing packages or updating the code of all of them. It's also free to distribute and use, so you won't need to pay any license fees, meaning that the overall price that you will have to pay for a server making use of CentOS will be much lower as compared to the price for a server working with some other OS. What makes CentOS stand out among other Linux releases is its huge developer community, that will help you get the reply to any kind of question or problem you have. What's even more, each version that is released officially is supported for ten years, which is longer than with any other OS. What this means is ordinary security and stability updates that will provide a great software environment for all your web applications in the long run.