CentOS is one of the most widely used Operating Systems for hosting servers. It's one of the countless Linux releases out there, but what differentiates it from all the rest is the long-term support, which ensures that you'll always have a dependable and risk-free OS. Each CentOS version that is released is supported for a decade, that is considerably longer than with another OS out there. CentOS also has a much more numerous developer community than other distributions, therefore in case you experience any kind of problem or have any questions, you will be able to rapidly find the information which you need. CentOS is widely known as among the best server Operating Systems, as it's very stable and secure, which makes it very reliable even if you host confidential info. Considering that it is open-source, you will be able to modify every 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 have to pay license fees of any type.