If you get a hosting server of your own, it will work independently, so it'll have its own Os and you'll be able to later install server side applications directly or script-driven internet sites through a hosting Cp. While keeping the Operating System updated isn't always considered a necessity, it can be a really important task for several reasons. A newer Operating system version could have better support for specific hardware, so you may get better performance for the sites and web apps you install. Your server will also be more protected because updates normally include security patches that fix small issues which may enable unauthorized individuals to access your content. Last, but not least, newer script versions, which are also released for both increased security and for additional features, may require a later version of the Os in order to work properly and with their 100 % capabilities.