This enables a drone operator (pilot) to request a Waiver or permission to fly a drone in restricted airspace.

UAS Facility Maps show the maximum altitudes around airports where the FAA may authorize part 107 UAS operations without additional safety analysis. The maps should be used to inform requests for part 107 airspace authorizations and waivers in controlled airspace.

Here's a snapshot of the current state of drones in the United States...

The information explains the difference between a Recreational Drone Pilot and a Commercial or Part 107 Pilot.