How does the R8's Quattro all-wheel drive system work?

I've heard that the R8 features Audi's Quattro all-wheel drive system, but I'm not familiar with how it functions. Can someone explain it to me?

The R8's Quattro all-wheel drive system sends up to 85% of the power to the rear wheels, but can instantly redirect up to 100% of power to the front wheels if needed, providing enhanced traction and handling in various driving conditions.

The Quattro all-wheel drive system uses a mechanical center differential to distribute torque between the front and rear axles, providing better stability and control.