What is the difference between Audi's Quattro and Porsche's AWD systems?

I have heard that both Audi and Porsche use different types of all-wheel drive systems in their cars. Can anyone clarify what makes each system unique and how it affects driving performance?

Audi's Quattro system is a permanent AWD system that distributes power between the front and rear axles, providing better stability and traction in all types of conditions. Porsche's AWD system, on the other hand, is known as Porsche Traction Management (PTM) and has a rear-biased setup for a more sporty driving experience.

The key difference between Audi's Quattro and Porsche's AWD is in their approach to power distribution. Quattro uses a center differential to split power between the front and rear axles, while Porsche's PTM uses an electronically controlled clutch pack at the rear axle to manage power distribution.