CentOS is an abbreviation for Community Enterprise OS. This is one of the top Linux releases for servers and it's regarded as one of the most reliable and safe Operating Systems out there. 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 kind of license fees, which means that the overall price that you will need to pay for a server running CentOS will be much lower as compared to the price for a server running some other OS. What makes CentOS stand out among various other Linux releases is its huge developer community, that will help you discover the reply to any question or problem you might have. What's more, each version that is released officially is supported for ten years, that is is longer than with any other operating system. This means frequent security and stability updates that provides a great software environment for your web apps in the long run.