CentOS is one of the preferred Operating Systems for web hosting servers. It's one of the countless Linux releases out there, but what differentiates it from the rest is its long-term support, which ensures that you will always have a reliable and risk-free OS. Every CentOS version that is released is supported for a decade, that's a lot longer than with any other OS in existence. CentOS also has a much larger developer community than other distributions, so if you experience any kind of problem or have some questions, you will be able to promptly discover the data that you need. CentOS is widely known as one of the best server Operating Systems, since it is very stable and protected, which makes it very reliable even when you host sensitive info. Because it is open-source, you can modify any part of it and personalize it according to your needs, not to mention that the overall cost for a CentOS-based server will be lower, because you will not need to pay license fees of any sort.