Why does the Audi A7 use adaptive cruise control?

I've noticed that the Audi A7 has a feature called adaptive cruise control, but I'm not sure why it's necessary. Can someone explain its purpose and how it works?

Adaptive cruise control, also known as ACC, is a relatively new technology that uses sensors and radar to maintain a safe distance between your car and the vehicle in front of you. It's incredibly useful for long drives or heavy traffic, as it can reduce stress and fatigue while driving. As for why Audi specifically uses it, well, they pride themselves on innovation and safety, so it's no surprise they would include it in their vehicles.