What does the Audi A1's quattro system do?

I keep hearing about the quattro system in Audi A1s, 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, which distributes power to all four wheels as needed for better traction and handling. It helps provide stability and control, especially in challenging road conditions.

In addition to improving driving dynamics, the quattro system also enhances safety by preventing wheel slippage and maintaining grip on the road. It's especially useful in slippery or uneven terrain.