Having full root-level access means that you can access and customize every file on a selected server, including all the system files, and to change system settings or install server-side software that may be necessary for specific scripts and even offline applications in order to function properly. A server is accessed at the root level through a root user, who has full privileges to do any of the abovementioned things. Your root user can also create various other users. For security reasons, you are advised to have a different account for day-to-day tasks and to use the root account only if you actually need to perform a particular task on the hosting server. The root-level access function provides you with full control over your server from any location, as long as you have the user credentials.