[toss1]

The modern electric multirotor drones (e.g., quad-, hexa-, octo-copters) are the result of computer controls allowing a configuration that is so unstable that no human could fly it to be actually implemented as aircraft that are much more agile, reliable, robust, and easier to fly (onboard or remotely) than helicopters. They also have a smaller footprint than a helicopter.

Integrating multirotor technology into a fixed-wing aircraft in a VTOL configuration allows for the small takeoff/landing footprint of a helicopter with the flight efficiency of a fixed-wing aircraft.

Does that help?