CentOS is short for Community Enterprise OS. This is one of the top Linux distributions for servers and it's recognized as one of the most stable and protected Operating Systems on the market. CentOS is open-source software, so you'll be able to customize it in whatever way you see fit, adding and removing packages or altering the program code of all of them. It is also free to distribute and use, so you will not need to pay any kind of license fees, meaning that the overall price that you'll have to pay for a server making use of CentOS will be cheaper than the price for a server working with some other OS. What makes CentOS stand out among various other Linux releases is its huge developer society, that will help you discover the answer to any question or problem you have. Furthermore, each version that is released officially is supported for a decade, that is is a lot longer than with any other OS. This means frequent protection and stability updates that provides a great software setting for all of your web apps in the long run.