A virtual or a dedicated server is a standalone machine, which has its own Operating System and always keeping the latter up-to-date is an essential, albeit underrated task. Not only can an update boost the functionality of your internet sites, but it could also save you lots of troubles in the future. An update could be released for many different reasons, the most common being to fix newly found security holes, which may permit third-party people to access and alter the content which you have on the hosting machine. You may also see an improved overall performance of your web apps since updates could also be released for better compatibility between the Os and the configuration it works on so as to get the most out of the hardware. Also, if you keep your applications up-to-date, they might also need a later Operating system version that will have the needed software dependencies and will enable them to operate properly.