Each virtual or dedicated server has its own Operating System and functions separately from the servers of other customers. Updating the Operating system is usually overlooked, but doing that might have quite a lot of benefits for your internet sites. The most essential reason to use the newest version is that patches are typically released to fix security holes inside the Operating System code, so if you do not install the updates, you risk people with destructive intentions to use these holes and to gain access to your content. OS updates are also released for enhanced functionality of the system in general and for better compatibility with the hardware on the market, which can directly impact the functionality of your websites. If the functionality and the security of your scripts is the reason to update them, you might also know that their latest versions require an updated Operating System to be able to work effectively, therefore keeping the OS up-to-date is always a good idea.