A virtual or a dedicated server is a standalone machine, which has its own Operating System and always keeping the latter up-to-date is a crucial, although underrated task. Not only can an update improve the functionality of your websites, but it can also save you lots of issues down the road. An update could be released for many different reasons, the most prevalent being to fix recently discovered security holes, which may allow third-party people to access and change the content which you have on the server. You can also see an improved overall performance of your web applications as updates can also be released for better compatibility between the Operating System and the configuration it operates on in order to get the most out of the hardware. Moreover, if you keep your programs up-to-date, they may also require a later Operating system version that will have the required software dependencies and will allow them to operate properly.