CentOS is short for Community Enterprise Operating System. This is one of the top Linux distributions for servers and it's well known as being one of the most stable and risk-free Operating Systems out there. CentOS is open-source software, which means that you can customize it in any way you see fit, adding and removing packages or changing the program code of all of them. It's also free to distribute and use, so you won't have to pay any kind of license fees, meaning that the overall price that you'll need 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 releases is its huge developer community, that will help you get the reply to any kind of question or problem you may have. Furthermore, each version that is released officially is supported for a decade, that is is longer than with any alternative operating system. This means frequent security and stability updates which provides a reliable software setting for all of your web apps in the long run.