A virtual or a dedicated server is a standalone machine, which has its own Os and always keeping the latter up-to-date is a crucial, although underrated task. Not only can an update boost the functionality of your sites, but it can also save you a lot of issues down the road. An update can be released for a variety of reasons, the most common being to fix newly found security holes, which may enable third-party individuals to access and modify the content which you have on the hosting server. You might also see an improved overall performance of your web programs because updates could also be released for better compatibility between the Os and the configuration it works on in order to get the most out of the hardware. In addition, if you keep your programs up-to-date, they could also need a later OS version that will have the necessary software dependencies and will allow them to function adequately.