A virtual or a dedicated hosting server is a standalone machine, which has its own Os and keeping the latter up-to-date is an important, though underestimated task. Not only can an update enhance the overall performance of your sites, but it can also save you a great deal of troubles in the future. An update can be released for a lot of reasons, the most frequent being to fix recently found security holes, which may enable third-party people to access and change the content which you have on the hosting server. You may also see an improved efficiency of your web programs since updates might also be released for better compatibility between the Operating System and the configuration it works on so as to get the most out of the hardware. Additionally, if you keep your applications up-to-date, they might need a later OS version which will have the needed software dependencies and will enable them to operate effectively.