What is the quattro system in Audi A5 and how does it work?

As a newbie in the automotive world, I've heard a lot about the quattro system in Audi cars. Can someone explain how it works and why it's important for the A5 model?

The quattro system in the Audi A5 is a revolutionary all-wheel drive system that constantly monitors the road conditions and distributes power to each wheel accordingly. It ensures better traction and control, providing a more stable and safe driving experience.