How does the optional all-wheel drive system work in the Audi A4?

I am considering upgrading to the Audi A4 with the optional all-wheel drive system, but I am not sure how it actually functions. Can you explain how the system works and what are its benefits?

The optional all-wheel drive system in the Audi A4 uses sensors to detect when the front wheels are losing traction and automatically sends power to the rear wheels to improve stability and traction. This is especially helpful in wet, snowy, or slippery conditions, providing better handling and control.

The all-wheel drive system in the Audi A4 also helps with cornering by distributing torque to the wheels with the most grip, resulting in better handling and a smoother ride. It provides a more balanced and responsive driving experience on both dry and wet roads.