A virtual or a dedicated server is a standalone machine, that has its own Operating System and maintaining the latter up-to-date is an essential, albeit underestimated task. Not simply can an update boost the performance of your websites, but it will also save you a great deal of issues down the road. An update could be released for a variety of reasons, the most frequent being to fix newly discovered security holes, which may allow third-party individuals to access and change the content which you have on the server. You will also see an improved functionality of your web applications since updates might also be released for better compatibility between the Operating System and the configuration it operates on so as to get the most out of the hardware. Furthermore, if you keep your apps up-to-date, they could also need a later OS version which will have the needed software dependencies and will permit them to function effectively.