A virtual or a dedicated server is a standalone machine, that has its own Os and maintaining the latter up-to-date is a vital, albeit underrated task. Not simply can an update improve the functionality of your internet sites, but it can also save you a lot of problems down the road. An update could be released for a number of reasons, the most frequent being to fix newly found security holes, which may permit third-party people to access and change the content which you have on the server. You might also see an improved efficiency of your web applications since updates could also be released for better compatibility between the Os and the configuration it works on as a way to get the most out of the hardware. Additionally, if you keep your applications up-to-date, they might need a later OS version which will have the necessary software dependencies and will permit them to operate properly.