How does the quattro system in Audi vehicles work?

I've heard about Audi's quattro system, but I'm not entirely sure how it works. Can someone explain it to me?

The quattro system in Audi vehicles is an all-wheel drive system that distributes power to all four wheels in varying amounts depending on road conditions. This improves traction and handling for better overall performance.

Audi's quattro system uses a center differential to distribute power between the front and rear axles, allowing for optimal power distribution and improved control on any type of road surface.

Unlike traditional all-wheel drive systems that only kick in when wheels slip, Audi's quattro system is always active and constantly adapts to changing road conditions for maximum grip and stability.