A virtual or a dedicated server is a standalone machine, which has its own Os and always keeping the latter up-to-date is a crucial, though underestimated task. Not only can an update enhance the functionality of your sites, but it can also save you lots of troubles down the road. An update could be released for many different reasons, the most frequent being to fix newly discovered security holes, which may enable third-party individuals to access and modify the content which you have on the hosting server. You will also see an improved performance of your web programs since updates can also be released for better compatibility between the Operating System and the configuration it operates on in order to get the most out of the hardware. Moreover, if you keep your programs up-to-date, they might need a later Operating system version that will have the necessary software dependencies and will permit them to operate effectively.