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, albeit underrated task. Not only can an update improve the general performance of your websites, but it can also save you a great deal of problems in the future. An update could be released for several reasons, the most frequent being to fix newly discovered security holes, which may allow third-party individuals to access and alter the content you have on the server. You will also see an improved performance of your web programs as updates might also be released for better compatibility between the Os and the configuration it operates on as a way to get the most out of the hardware. Moreover, if you keep your applications up-to-date, they might need a later Operating system version which will have the needed software dependencies and will permit them to function properly.