CentOS is short for Community Enterprise OS. This is one of the leading Linux releases for servers and it is regarded as being one of the most stable and safe Operating Systems out there. CentOS is open-source software, which means that you will be able to personalize it in any way you see fit, adding and removing packages or altering the program code of any of them. It's also free to distribute and use, so you won't have to pay any license fees, which means that the overall price that you'll have to pay for a server making use of CentOS will be cheaper as compared to the price for a server running some other OS. What makes CentOS stand out among other Linux distributions is its huge developer society, which will help you discover the answer to any kind of question or problem you have. What's more, each version that's released officially is supported for a decade, that is is longer than with any other OS. This means ordinary safety and stability updates that will provide a dependable software environment for your web apps in the long run.