A virtual or a dedicated hosting server is a standalone machine, which has its own Os and maintaining the latter up-to-date is a vital, although underrated task. Not only can an update enhance the performance of your sites, but it will also save you a great deal of troubles later on. An update could be released for a variety of reasons, the most widespread being to fix recently discovered security holes, which may permit third-party individuals to access and alter the content which you have on the hosting server. You will also see an improved performance of your web apps because updates may also be released for better compatibility between the Operating System and the configuration it works on in order to get the most out of the hardware. Moreover, if you keep your apps up-to-date, they may also require a later OS version which will have the required software dependencies and will allow them to work effectively.