How does Audi A8's quattro all-wheel drive improve handling on wet roads?

I have heard that the Audi A8 has excellent handling, but what specifically makes it better on wet roads compared to front or rear-wheel drive cars?

The quattro all-wheel drive system on the Audi A8 utilizes a torque-vectoring feature that can shift power between each individual wheel, giving you better grip and control on wet roads.

In addition to the torque-vectoring feature, the quattro all-wheel drive system also has a self-locking center differential that can distribute power between the front and rear axles, ensuring maximum traction on slippery surfaces.