Having full root-level access signifies that you'll be able to access and update any kind of file on a specific server, which includes all the system files, and to change system settings or set up server-side software that 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 do all of the aforementioned things. Your root user may also make other users. For security reasons, you are advised to have a different account for routine tasks and to use the root account only if you actually need to do a specific task on the hosting server. The root-level access feature offers you full control of your server from almost any location, given that you have the user credentials.