CentOS is short for Community Enterprise OS. This is one of the leading Linux releases for servers and it's regarded as being one of the most reliable and secure Operating Systems available. CentOS is open-source software, so you'll be able to customize it in any way you see fit, adding and removing packages or changing the code of any of them. It is also free to distribute and use, so you will not 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 lower than the price for a server working with an alternative OS. What makes CentOS stand out among various other Linux distributions is its huge developer community, which will help you find the answer to any question or problem you have. In addition, each version which is released officially is supported for a decade, which is a lot longer than with any other operating system. This means routine protection and stability updates which provides a stable software environment for all of your web applications in the long run.