How does the Audi A7's all-wheel steering improve handling and performance?

I'm considering purchasing an Audi A7 and have heard about its all-wheel steering feature. Can someone explain how this feature works and how it benefits the car's handling and performance?

The Audi A7's all-wheel steering uses electronically controlled actuators to turn the rear wheels in the same or opposite direction as the front wheels, depending on the driving situation. This results in improved agility and stability, especially when cornering at higher speeds.