How does the Audi A8's Quattro system enhance the car's performance?

I am considering buying an Audi A8 and I've heard a lot about its Quattro technology. Can someone explain exactly how this system works and how it improves the car's performance?

The Quattro system is a permanent four-wheel drive system that uses a central differential to distribute power between the front and rear axles. This greatly improves the car's traction and handling in all weather conditions. My advice would be to opt for the Quattro system if you live in an area with frequent rain or snow.