Why does the Audi A8 have a different type of suspension from other luxury cars?

I noticed that the Audi A8 has an adaptive air suspension while most other luxury cars use coil springs. What is the reason for this difference and how does it affect the overall driving experience?

The adaptive air suspension is a key feature of Audi's Quattro all-wheel drive system, providing better handling and traction in all road conditions. Additionally, the air suspension allows for a more comfortable and customizable ride, as the suspension can be adjusted based on driving style and road surface.