What is the difference between Quattro and S-line in the Audi A5?

I noticed that some Audi A5 models have the Quattro label while others have the S-line label. Can you explain what these labels mean and what the difference is between them?

Quattro refers to Audi's all-wheel drive system, providing better traction and handling in different road conditions. On the other hand, S-line is a package that includes sportier exterior and interior features such as a sport-tuned suspension and more aggressive styling.