How does the Audi A6 Quattro AWD system work?

I am considering buying an Audi A6 Quattro and I've heard about its AWD system. Can you explain how it works and what benefits it provides?

The Audi A6 Quattro AWD system utilizes a center differential and torque distribution to distribute power between the front and rear wheels for better traction and handling in all driving conditions. It constantly monitors grip levels and adjusts the torque accordingly, offering improved stability and performance on various surfaces such as rain, snow, and gravel.