What is Quattro on the Audi A4?

I'm considering buying an Audi A4 and I keep hearing about Quattro. Can someone explain what it is and why it's important?

Quattro is Audi's all-wheel drive system. It allows for better traction and handling, especially in unfavorable weather conditions like snow and rain.

It's important because it not only improves performance and safety, but it also enhances the overall driving experience and feel of the car.

Audi's Quattro system distributes power evenly to all four wheels, providing better balance and improved cornering capabilities.