A virtual or a dedicated server is a standalone machine, that has its own Os and always keeping the latter up-to-date is an important, albeit underrated task. Not only can an update enhance the overall performance of your websites, but it can also save you lots of problems in the future. An update can be released for a number of reasons, the most prevalent being to fix newly discovered security holes, which may allow third-party people to access and modify the content which you have on the server. You will also see an improved functionality of your web apps since updates can also be released for better compatibility between the Os and the configuration it operates on so that you can get the most out of the hardware. In addition, if you keep your programs up-to-date, they could also require a later Operating system version that will have the necessary software dependencies and will enable them to work adequately.