CentOS is one of the most widely used Operating Systems for hosting servers. It's one of the many Linux distributions available, yet what differentiates it from the rest is the long-term support, which guarantees that you will always have a dependable and safe OS. Every CentOS version that is released is supported for 10 years, that's a lot longer than with another OS out there. CentOS also has a much larger developer community than other distributions, therefore if you experience any kind of problem or have some questions, you can instantly discover the info that you need. CentOS is widely known as among the best server Operating Systems, as it's very stable and secure, that makes it very reliable even if you host private data. Due to the fact that it is open-source, you are able to modify any part of it and personalize it according to your requirements, 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.