How does the Audi A7's Quattro system improve handling in different driving conditions?

I've been considering purchasing an Audi A7, but I'm not sure how the Quattro system affects the car's performance. Can someone explain the benefits of this feature and how it works?

The Quattro system in the Audi A7 utilizes a permanent all-wheel drive system, giving you better grip and control on the road. In wet or slippery conditions, the system continuously monitors the wheels and can redistribute power to the wheels with the most traction.