What are the main differences between Audi's Quattro system and other all-wheel drive systems?

I am curious about the Quattro system in Audi cars and how it compares to other all-wheel drive systems in terms of performance and technology. Can anyone provide an in-depth explanation?

Audi's Quattro system is known for its superior traction and handling, thanks to its innovative design and advanced technology. Unlike other all-wheel drive systems that typically send power to all four wheels continuously, the Quattro system only sends power to the front wheels until the rear wheels need it, resulting in improved efficiency and performance.

One key difference between Audi's Quattro system and other all-wheel drive systems is the use of a center differential. This allows for a more evenly distributed power distribution to all four wheels, resulting in improved handling and stability. Other all-wheel drive systems may use a simpler viscous or electronically-controlled limited slip differential.