Having full root-level access signifies that you will be able to access and modify every file on a selected server, including all of the system files, and to change system settings or set up server-side software which may be required by specific scripts and even offline applications to function efficiently. A server is accessed at the root level through a root user, who has full privileges to perform all of the abovementioned tasks. The root user can also generate various other users. For safety reasons, you're advised to have a different account for routine tasks and to use the root account only if you actually need to perform some task on the website hosting server. The root-level access feature provides you with full control over your server from any existing location, provided that you know the user credentials.