A virtual or a dedicated hosting server is a standalone machine, that has its own Os and maintaining the latter up-to-date is an important, though underrated task. Not simply can an update enhance the general performance of your sites, but it can also save you a lot of problems later on. An update could be released for several reasons, the most frequent being to fix newly found security holes, which may permit third-party people to access and modify the content that you have on the hosting server. You can also see an improved overall performance of your web programs since updates might also be released for better compatibility between the Os and the configuration it functions on so that you can get the most out of the hardware. Moreover, if you keep your programs up-to-date, they may also require a later OS version which will have the necessary software dependencies and will enable them to function properly.