CentOS is one of the most widely used Operating Systems for web hosting servers. It's one of the countless Linux distributions available, but what distinguishes it from the others is the long-term support, which ensures that you'll always have a reliable and safe Operating System. Each CentOS version that is released is supported for a decade, that's longer than with almost every other OS out there. 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 can promptly get the information that you need. CentOS is regarded as one of the best server Operating Systems, due to the fact that it's very stable and protected, which makes it really reliable even when you host sensitive info. Since it is open-source, you will be able to modify any part of it and customize it according to your requirements, not to mention that the total cost for a CentOS-based server will be lower, since you will not need to pay license fees of any type.