What is Quattro all-wheel drive on the Audi A5?

I've heard about Quattro all-wheel drive on the Audi A5, but I'm not sure what it is or how it works. Can someone explain it to me?

Quattro all-wheel drive is Audi's proprietary all-wheel drive system. It uses sensors and electronic control systems to distribute power to each wheel, providing superior traction and handling on all types of terrain and weather conditions.

To put it simply, Quattro all-wheel drive on the Audi A5 allows the car to distribute power to each wheel individually, giving you better traction and control on the road. It's especially useful for driving in snowy or wet conditions.