Having full root-level access signifies that you can access and change any kind of file on a particular server, including all 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 in order to function efficiently. A server is accessed at the root level with a root user, which has full privileges to do all the abovementioned tasks. Your root user may also create various other users. For safety reasons, you are advised to have one more account for daily tasks and to use the root account only if you actually need to perform a specific task on the website hosting server. The root-level access feature provides you with full control of your server from any location, given that you have the user credentials.