If you get a hosting server of your own, it will run independently, so it will have its own Operating System and you can later install server side applications directly or script-driven internet sites through a hosting Cp. Although keeping the Operating System updated isn't always considered a necessity, it can be a rather important task for a number of reasons. A more modern OS version may have better support for specific hardware, so you might get better performance for the websites and web apps that you install. Your server will also be more protected since updates typically include security patches which take care of small problems which may enable unauthorized individuals to access your content. Last, but not least, more recent script versions, which are also released for both increased security and for additional features, may need a later version of the Operating System in order to work properly and with their 100 % capabilities.