What does the Audi A3's Quattro system do?

I've heard the term Quattro being thrown around when discussing Audi vehicles, but I'm not exactly sure what it does. Can someone explain the specifics of how Quattro works in an Audi A3?

The Audi A3's Quattro system is their all-wheel drive technology, which distributes power to all four tires for improved traction and handling on a variety of surfaces. As a general rule, Quattro is known for providing a more stable and responsive driving experience, especially in inclement weather or rough terrain.

In addition to providing better handling and grip, Quattro also helps improve fuel efficiency and reduce emissions. By determining which tires have the most available grip, the system can distribute power accordingly and prevent unnecessary wheel spin, which leads to improved overall performance.

Fun fact - Quattro was first introduced by Audi in 1980 and quickly gained recognition for its superior handling and performance in motorsports. It has since become a signature feature in many Audi vehicles, including the A3.