How does the All-Wheel Steering system work on the Audi A6?

I've heard that the Audi A6 has an All-Wheel Steering system. Can you explain how it functions and what benefits it brings to the driving experience?

The All-Wheel Steering system on the Audi A6 utilizes an electro-mechanical steering system to turn the rear wheels in the same direction as the front wheels at higher speeds, providing improved stability and handling. Additionally, at lower speeds, the rear wheels turn in the opposite direction, reducing the turning radius and making it easier to maneuver in tight spaces.