What is Quattro all-wheel drive in Audi A4?

I have heard that Audi A4 has Quattro all-wheel drive, but I am not sure what that means or how it works. Can someone explain it to me?

Quattro all-wheel drive is a unique feature in Audi A4 that distributes power to all four wheels for improved traction, handling, and stability. It uses a sophisticated electronic system to constantly adjust power between the front and rear axles, as well as between the left and right wheels.

Think of Quattro all-wheel drive as your car's safety net. It is specially designed to provide optimum grip and control in any driving situation, even in adverse weather conditions. Plus, with its innovative torque vectoring technology, it can help you take corners with more precision and confidence.