CentOS is an abbreviation for Community Enterprise Operating System. This is one of the top Linux releases for servers and it's regarded as being one of the most reliable and protected Operating Systems available. CentOS is open-source software, so you will be able to customize it in whatever way you see fit, adding and removing packages or altering the code of any 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 total price that you'll have to pay for a server running CentOS will be much lower than the price for a server working with an alternative OS. What makes CentOS stand out among various other Linux releases is its huge developer community, which will help you get the answer to any question or problem you might have. What's more, each version that is released officially is supported for a decade, that's is a lot longer than with any alternative OS. What this means is routine safety and stability updates which will provide a great software setting for all your web applications in the long run.