What is the Torsen Differential on the Audi A4?

I've heard that the Audi A4 has a "Torsen Differential", but I'm not entirely sure what that means and how it helps with the driving experience. Can someone explain?

The Torsen Differential is a specially designed type of differential that allows for better distribution of power between the wheels, resulting in improved stability and traction. So, for example, on a slippery road, the Torsen Differential can send more power to the wheel with better grip, making for a smoother and safer drive overall.

To put it simply, the Torsen Differential is a type of mechanical device that is responsible for controlling the amount of power that is transferred to each of the wheels on the Audi A4. It's a key component of the Quattro all-wheel drive system, which ensures optimal traction and handling in various driving conditions.