CentOS is an abbreviation for Community Enterprise Operating System. This is one of the best Linux releases for servers and it is well known as one of the most reliable and safe Operating Systems out there. CentOS is open-source software, which means that you can personalize it in any way you see fit, adding and removing packages or updating the program code of any of them. It is also free to distribute and use, so you will not have to pay any kind of license fees, meaning that the total price that you'll need to pay for a server running CentOS will be lower as compared to the price for a server running another OS. What makes CentOS stand out among other Linux distributions is its huge developer society, which will help you get the answer to any kind of question or problem you may have. What's even more, each version which is released officially is supported for ten years, that is is longer than with any other OS. What this means is ordinary protection and stability updates which will provide a dependable software setting for your web apps in the long run.