CentOS is an abbreviation for Community Enterprise OS. This is one of the best Linux releases for servers and it is regarded as one of the most stable and safe Operating Systems on the market. CentOS is open-source software, so you will be able to personalize it in any way you see fit, adding and removing packages or altering the code of all of them. It is also free to distribute and use, so you won't have to pay any license fees, meaning that the total price that you'll need to pay for a server making use of CentOS will be much lower as compared to the price for a server running some other OS. What makes CentOS stand out among various other Linux releases is its huge developer community, which will help you find the answer to any question or problem you might have. Furthermore, each version that's released officially is supported for 10 years, that is is longer than with any alternative operating system. This means routine safety and stability updates that provides a great software environment for your web apps in the long run.