CentOS is one of the preferred Operating Systems for website hosting servers. It is one of the numerous Linux releases available, but what differentiates it from the others is the long-term support, which guarantees that you will always have a stable and safe OS. Each CentOS version that is released is supported for a decade, that's much longer than with almost every other OS out there. 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 get the info that you need. CentOS is regarded as one of the best server Operating Systems, since it's very stable and protected, which makes it really reliable even if you host private info. Since it is open-source, you are able to modify any part of it and customize it according to your needs, not to mention that the overall cost for a CentOS-based server will be lower, since you will not need to pay license fees of any sort.