How does the Audi A6 Quattro all-wheel drive system work?

I've heard that the Audi A6 has a unique all-wheel drive system called Quattro. Can you explain how it works and what makes it different from other all-wheel drive systems in luxury cars?

The Audi A6 Quattro all-wheel drive system uses a center differential to distribute power independently between the front and rear axles, providing better traction and handling in various road conditions. This makes it stand out from other AWD systems that only react to wheel slip.

Quattro is designed to maintain a level of 40:60 front-to-rear torque distribution for optimal performance. It also utilizes electronic stability control and torque vectoring, allowing for precise and agile handling even on slippery surfaces.