How does the Audi A7's all-wheel drive system work and what are the benefits?

I'm considering purchasing an Audi A7 and I've heard great things about their all-wheel drive system. Can someone explain how it works and why it's better than traditional two-wheel drive?

The Audi A7's all-wheel drive system, also known as quattro, utilizes sensors to detect wheel slippage and then distributes power to the wheels with the most grip. This allows for better traction and overall handling, especially in inclement weather conditions.