A virtual or a dedicated server is a standalone machine, which has its own Os and always keeping the latter up-to-date is an essential, albeit underestimated task. Not only can an update boost the general performance of your sites, but it will also save you a great deal of problems in the future. An update may be released for a number of reasons, the most widespread being to fix recently identified security holes, which may permit third-party individuals to access and alter the content that you have on the hosting server. You can also see an improved performance of your web applications since updates could also be released for better compatibility between the Os and the configuration it operates on as a way to get the most out of the hardware. In addition, if you keep your applications up-to-date, they could also require a later Operating system version which will have the necessary software dependencies and will allow them to work adequately.