How does the Audi A8 adaptive cruise control work?

I've heard that the Audi A8 has adaptive cruise control, but I'm not sure how it works. Can someone explain it to me?

The Audi A8 uses radar and camera sensors to detect and maintain a safe distance from other vehicles in front of you. It can automatically adjust your speed and braking to match the flow of traffic, making your commute smoother and less stressful.

Adaptive cruise control also has a stop-and-go feature, which can bring the car to a complete stop in heavy traffic. Just make sure to keep your hands on the wheel and pay attention to your surroundings, as the system may require input from the driver at times.