A virtual or a dedicated server is a standalone machine, which has its own Os and always keeping the latter up-to-date is an essential, though underrated task. Not only can an update enhance the general performance of your sites, but it could also save you a lot of issues down the road. An update could be released for a variety of reasons, the most frequent being to fix recently discovered security holes, which may permit third-party people to access and alter the content that you have on the hosting server. You will also see an improved performance of your web applications because updates may also be released for better compatibility between the Operating System and the configuration it functions on in order to get the most out of the hardware. Additionally, if you keep your apps up-to-date, they may need a later OS version that will have the needed software dependencies and will permit them to work adequately.