A virtual or a dedicated hosting server is a standalone machine, that has its own Operating System and always keeping the latter up-to-date is a vital, although underrated task. Not only can an update boost the performance of your sites, but it could also save you lots of troubles down the road. An update may be released for a lot of reasons, the most prevalent 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 might also see an improved performance of your web apps as updates can also be released for better compatibility between the Os and the configuration it works on so as to get the most out of the hardware. Furthermore, if you keep your applications up-to-date, they might need a later OS version that will have the required software dependencies and will allow them to work effectively.