What is the function of the quattro system in the Audi A5?

I've heard that the quattro system is an important feature of the Audi A5, but I'm not sure what it does exactly. Can someone explain its purpose?

The quattro system is Audi's all-wheel drive technology, designed to improve traction and handling on the road. It constantly adjusts torque to each individual wheel, providing better grip and stability in different driving conditions.

In simple terms, the quattro system distributes power between the front and rear axles, allowing for better handling and stability. It also helps with acceleration and cornering, making for an overall more enjoyable driving experience.