A virtual or a dedicated hosting machine is a standalone machine, which has its own Os and always keeping the latter up-to-date is a crucial, though underrated task. Not only can an update improve the performance of your websites, but it could also save you lots of troubles in the future. An update could be released for many different reasons, the most common being to fix newly identified security holes, which may allow third-party individuals to access and modify the content you have on the hosting machine. You can also see an improved overall performance of your web apps because updates can 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. Moreover, if you keep your apps up-to-date, they could also require a later OS version that will have the needed software dependencies and will permit them to operate effectively.