A virtual or a dedicated server is a standalone machine, that has its own Os and always keeping the latter up-to-date is a vital, although underestimated task. Not simply can an update enhance the general performance of your sites, but it could also save you a lot of troubles later on. An update may be released for several reasons, the most frequent being to fix newly identified security holes, which may allow third-party individuals to access and modify the content you have on the server. You can also see an improved overall performance of your web programs as updates might also be released for better compatibility between the Os and the configuration it functions on as a way to get the most out of the hardware. Also, if you keep your programs up-to-date, they may also require a later OS version which will have the required software dependencies and will enable them to work effectively.