What is Audi A6's Quattro all-wheel drive system and how does it improve performance?

I'm considering purchasing an Audi A6 and I've heard about their Quattro all-wheel drive system. Can you explain to me what it is and how it works?

The Audi A6 Quattro uses a mechanical Torsen center differential to distribute power between the front and rear wheels, enhancing traction and stability on various road surfaces.

The Quattro all-wheel drive system constantly monitors road conditions and can adjust power delivery to specific wheels to prevent slipping and improve handling and acceleration.

Compared to front-wheel drive and rear-wheel drive systems, the Quattro all-wheel drive improves both performance and safety by evenly distributing power to all four wheels.