CentOS is one of the most widely used Operating Systems for website hosting servers. It is one of the countless Linux distributions available, however what differentiates it from the rest is the long-term support, which ensures that you'll always have a stable and secure Operating System. Each CentOS version that is released is supported for a decade, that is longer than with another OS available on the market. CentOS also has a much larger developer community than other distributions, therefore if you experience any kind of problem or have any questions, you'll be able to quickly find the details that you need. CentOS is widely known as one of the best server Operating Systems, as it's very stable and protected, that makes it very reliable even if you host confidential data. Considering that it is open-source, you'll be able to modify each and 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, as you will not have to pay license fees of any type.