CentOS is one of the most widely used Operating Systems for hosting servers. It's one of the numerous Linux releases in existence, yet what distinguishes it from all the rest is the long-term support, which guarantees that you will always have a reliable and secure Operating System. Each CentOS version that is released is supported for 10 years, which is much longer than with almost every other OS in existence. CentOS also has a much more numerous developer community than other distributions, so if you experience any kind of problem or have any questions, you will be able to instantly discover the details that you need. CentOS is regarded as among the best server Operating Systems, due to the fact that it's very stable and secure, that makes it very reliable even if you host private information. Considering that it is open-source, you're 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 have to pay license fees of any sort.