CentOS is short for Community Enterprise Operating System. This is one of the best Linux distributions for servers and it is well known as being one of the most stable and protected Operating Systems on the market. CentOS is open-source software, so you can personalize it in whatever way you see fit, adding and removing packages or updating the program code of all of them. It is also free to distribute and use, so you will not have to pay any kind of license fees, which means that the overall price that you'll need to pay for a server making use of CentOS will be much lower than the price for a server running another OS. What makes CentOS unique among other Linux distributions is its huge developer community, that will help you get the reply to any question or problem you have. In addition, each version which is released officially is supported for a decade, that's is a lot longer than with any alternative OS. What this means is regular protection and stability updates which provides a reliable software setting for all your web applications in the long run.