A virtual or a dedicated hosting server is a standalone machine, that has its own Os and keeping the latter up-to-date is a crucial, although underestimated task. Not only can an update enhance the functionality of your websites, but it can also save you a lot of issues down the road. An update could be released for a lot of reasons, the most prevalent being to fix recently discovered security holes, which may allow third-party individuals to access and modify the content that you have on the server. You may also see an improved functionality of your web apps as updates could also be released for better compatibility between the Os and the configuration it works on so that you can get the most out of the hardware. Furthermore, if you keep your programs up-to-date, they might need a later Operating system version which will have the necessary software dependencies and will enable them to work adequately.