CentOS is an abbreviation for Community Enterprise Operating System. This is one of the top Linux distributions for servers and it is regarded as being one of the most stable and secure Operating Systems available. CentOS is open-source software, which means that you can personalize it in any way you see fit, adding and removing packages or modifying the code of all of them. It is 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 more affordable than the price for a server working with an alternative OS. What makes CentOS unique among other Linux releases is its huge developer community, that will help you get the reply to any question or problem you have. Furthermore, each version that's released officially is supported for 10 years, that is is much longer than with any other operating system. This means ordinary safety and stability updates which will provide a reliable software setting for your web applications in the long run.