A virtual or a dedicated server is a standalone machine, that has its own Operating System and always keeping the latter up-to-date is an important, though underrated task. Not simply can an update improve the performance of your internet sites, but it could also save you a great deal of problems in the future. An update could be released for a number of reasons, the most frequent being to fix newly identified security holes, which may permit third-party individuals to access and change the content you have on the server. You might also see an improved overall performance of your web apps as updates may also be released for better compatibility between the Operating System and the configuration it functions on in order to get the most out of the hardware. Furthermore, if you keep your apps up-to-date, they may need a later Operating system version which will have the necessary software dependencies and will allow them to function properly.