A virtual or a dedicated hosting server is a standalone machine, which has its own Operating System and keeping the latter up-to-date is an important, though underrated task. Not simply can an update enhance the general performance of your sites, but it can also save you a lot of problems down the road. An update could be released for many different reasons, the most prevalent being to fix recently found security holes, which may permit third-party people to access and change the content that you have on the hosting machine. You may also see an improved overall performance of your web applications as updates could also be released for better compatibility between the Os and the configuration it operates on in order to get the most out of the hardware. Additionally, if you keep your apps up-to-date, they may also require a later Operating system version that will have the required software dependencies and will permit them to operate properly.