CentOS is an abbreviation for Community Enterprise OS. This is one of the top Linux distributions for servers and it's regarded as being one of the most reliable and risk-free Operating Systems on the market. CentOS is open-source software, which means that you will be able to personalize it in any way you see fit, adding and removing packages or updating the program code of all of them. It's also free to distribute and use, so you will not 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 working with another OS. What makes CentOS unique among other Linux distributions is its huge developer community, which will help you discover the answer to any question or problem you may have. What's more, each version which is released officially is supported for ten years, that's is longer than with any other operating system. This means regular protection and stability updates which will provide a reliable software setting for all of your web applications in the long run.