CentOS is an abbreviation for Community Enterprise Operating System. This is one of the top Linux releases for servers and it's well known as one of the most reliable and safe Operating Systems available. CentOS is open-source software, so you will be able to personalize it in whatever 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 need to pay any kind of license fees, which means that the total price that you'll need to pay for a server making use of CentOS will be more affordable as compared to the price for a server working with another OS. What makes CentOS stand out among other Linux distributions is its huge developer community, which will help you get the answer to any question or problem you have. What's even more, each version which is released officially is supported for 10 years, that is is longer than with any other OS. This means routine protection and stability updates which provides a stable software environment for all of your web applications in the long run.