CentOS is one of the most widely used Operating Systems for hosting servers. It is one of the countless Linux releases in existence, but what distinguishes it from all the rest is the long-term support, which guarantees that you'll always have a reliable and secure OS. Every CentOS version that is released is supported for ten years, that is a lot longer than with another OS available. CentOS also has a much larger developer community than other distributions, therefore if you experience any kind of problem or have any questions, you're able to promptly discover the details that you need. CentOS is widely known as one of the best server Operating Systems, as it's very stable and protected, which makes it really reliable even when you host confidential information. Considering that it is open-source, you'll be able to modify any part of it and personalize it according to your needs, not to mention that the total cost for a CentOS-based server will be lower, as you won't need to pay license fees of any type.