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 important, albeit underestimated task. Not simply can an update improve the performance of your internet sites, but it will also save you a great deal of problems in the future. An update can be released for a variety of reasons, the most prevalent being to fix newly found security holes, which may enable third-party people to access and alter the content that you have on the hosting server. You can also see an improved overall performance of your web apps because updates might also be released for better compatibility between the Os and the configuration it functions on in order to get the most out of the hardware. Also, if you keep your applications up-to-date, they may need a later OS version that will have the required software dependencies and will allow them to function effectively.