What is the purpose of the Audi 80 quattro differential lock?

I've heard of the Audi 80 quattro differential lock, but I don't fully understand its function. Can someone explain it to me?

The purpose of the Audi 80 quattro differential lock is to provide better traction and handling in slippery or uneven road conditions. When activated, it locks the differential and allows power to be distributed evenly to all wheels.

Think of it as a safety feature - the differential lock ensures that both wheels on the same axle are always turning at the same speed, preventing one wheel from losing traction and causing a loss of control.

In off-road or performance driving situations, the differential lock can be extremely useful in navigating through tough terrain or maintaining stability during high-speed turns.