CentOS is one of the most widely used Operating Systems for web hosting servers. It is one of the countless Linux releases available, however what differentiates it from all of the others is the long-term support, which guarantees that you will always have a reliable and risk-free Operating System. Each CentOS version that is released is supported for a decade, which is longer than with any other OS out there. CentOS also has a much more numerous developer community than other distributions, therefore in case you encounter any kind of problem or have some questions, you will be able to quickly get the data that you need. CentOS is widely known as among the best server Operating Systems, since it's very stable and protected, that makes it very reliable even if you host private data. Considering that it is open-source, you're able to modify every part of it and customize it according to your requirements, not to mention that the overall cost for a CentOS-based server will be lower, since you will not need to pay license fees of any sort.