A virtual or a dedicated hosting server is a standalone machine, that has its own Os and always keeping the latter up-to-date is an essential, albeit underrated task. Not only can an update boost the functionality of your websites, but it can also save you lots of problems down the road. An update can be released for a variety of reasons, the most prevalent being to fix recently discovered security holes, which may enable third-party people to access and modify the content which you have on the hosting machine. You will also see an improved performance of your web applications because updates could 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. Furthermore, if you keep your apps up-to-date, they might also require a later OS version which will have the necessary software dependencies and will enable them to function effectively.