A virtual or a dedicated hosting machine is a standalone machine, that has its own Os and maintaining the latter up-to-date is a vital, although underrated task. Not simply can an update improve the functionality of your sites, but it can also save you lots of problems later on. An update could be released for a number of reasons, the most common being to fix recently discovered security holes, which may allow third-party individuals to access and alter the content which you have on the server. You might also see an improved functionality of your web applications because updates can also be released for better compatibility between the Operating System and the configuration it works on so that you can get the most out of the hardware. Moreover, if you keep your apps up-to-date, they could also need a later Operating system version that will have the required software dependencies and will enable them to work properly.