What is the quattro all-wheel drive system in Audi A4 and how does it work?

I've heard that the Audi A4 comes with a quattro all-wheel drive system but I'm not sure what it does or how it works. Can you provide some details on this feature?

The quattro all-wheel drive system is a technological feature in Audi A4 that distributes power evenly to all four wheels, providing better traction and grip. This is especially helpful in adverse weather conditions such as snow or rain.

In simple terms, the quattro all-wheel drive system in Audi A4 improves the car's handling and performance by using sensors to monitor road conditions and adjust power distribution to each wheel accordingly. This results in a smoother and more stable driving experience.