If you get a server of your own, it will work independently, so it'll have its own Operating System and you could later install server side applications directly or script-driven websites via a hosting Cp. While keeping the Operating System updated isn't always considered fundamental, it can be a quite important task for a variety of reasons. A newer Operating system version may have better support for specific hardware, so you may get better performance for the internet sites and web apps that you install. Your server will also be more safe since updates typically include security patches that resolve small problems which may permit unauthorized individuals to access your content. Last, but not least, current script versions, which are also released for both increased security and for additional features, might require a later version of the Os in order to work correctly and with their 100 % capabilities.