What is the function of the Audi A4's Quattro system?

I've heard about the Quattro system in the Audi A4, but I'm not sure what it does. Can someone explain its purpose and how it works?

The Quattro system is Audi's all-wheel drive technology that provides superior traction and handling in all types of road conditions. It uses sensors to detect loss of traction and automatically distributes power to the wheels with the most grip. It's especially useful in wet or slippery conditions.

The Quattro system also enhances the handling and stability of the Audi A4, especially in corners and curves. It helps distribute power between the front and rear wheels to provide better balance and control.

The all-wheel drive system of the Audi A4 utilizes a center differential that can distribute power between the front and rear axles, allowing for better performance and traction on any type of road surface.