CentOS is an abbreviation for Community Enterprise OS. This is one of the top Linux releases for servers and it's well known as one of the most stable and protected Operating Systems on the market. CentOS is open-source software, so you can personalize it in any way you see fit, adding and removing packages or altering the code of all of them. It's also free to distribute and use, so you won't need to pay any license fees, which means that the overall price that you will have to pay for a server making use of CentOS will be cheaper than the price for a server running some other OS. What makes CentOS unique among various other Linux distributions is its huge developer community, which will help you discover the reply to any question or problem you might have. What's more, each version which is released officially is supported for a decade, that's is a lot longer than with any alternative operating system. What this means is regular safety and stability updates which will provide a stable software setting for all of your web apps in the long run.