A virtual or a dedicated server is a standalone machine, which has its own Os and keeping the latter up-to-date is an essential, although underrated task. Not only can an update enhance the overall performance of your sites, but it could also save you lots of problems in the future. An update could be released for many different reasons, the most prevalent being to fix newly discovered security holes, which may enable third-party individuals to access and change the content you have on the hosting server. You might also see an improved functionality of your web programs as updates can also be released for better compatibility between the Operating System and the configuration it works on so as to get the most out of the hardware. Moreover, if you keep your programs up-to-date, they could also need a later OS version which will have the required software dependencies and will allow them to function effectively.