How does the Quattro all-wheel-drive system in the Audi A4 work?

I've heard that the Audi A4 has a Quattro all-wheel-drive system but I'm not sure how it works. Can someone explain it to me?

The Quattro all-wheel-drive system works by sending power to all four wheels of the vehicle, providing better traction and stability on various road conditions.

By distributing power to each individual wheel, the Quattro all-wheel-drive system can enhance the handling and performance of the Audi A4, especially in corners and slippery roads.

Not only does the Quattro all-wheel-drive system improve the Audi A4's handling and performance, but it also enhances its safety and stability, especially in adverse weather conditions.