CentOS is one of the most widely used Operating Systems for website hosting servers. It's one of the numerous Linux distributions out there, yet what distinguishes it from all the rest is the long-term support, which ensures that you'll always have a stable and secure OS. Each CentOS version that is released is supported for ten years, that's considerably longer than with almost every other OS available. CentOS also has a much more numerous developer community than other distributions, therefore in the event you encounter any kind of problem or have some questions, you are able to promptly get the information that you need. CentOS is widely known as one of the best server Operating Systems, as it is very stable and secure, that makes it really reliable even if you host confidential info. Considering that it is open-source, you can modify any part of it and personalize it according to your requirements, not to mention that the overall cost for a CentOS-based server will be lower, since you won't need to pay license fees of any type.