CentOS is short for Community Enterprise OS. This is one of the best Linux distributions for servers and it is well known as being one of the most stable and risk-free Operating Systems available. CentOS is open-source software, which means that you can customize it in any way you see fit, adding and removing packages or altering the code of any of them. It is also free to distribute and use, so you won't have to pay any kind of license fees, which means that the overall price that you will have to pay for a server making use of CentOS will be cheaper as compared to the price for a server running another OS. What makes CentOS stand out among other Linux releases is its huge developer society, which will help you discover the answer to any kind of question or problem you may have. Furthermore, each version which is released officially is supported for ten years, that is is longer than with any other operating system. What this means is routine safety and stability updates that will provide a reliable software environment for all of your web applications in the long run.