Why do Audi A7 models have a sportback design?

I've noticed that most Audi A7 models have a sportback design, similar to hatchbacks or fastback cars. What is the reason behind this design choice? Does it serve a specific purpose or provide any advantages for the car?

The sportback design of Audi A7 models was first introduced in 2010, with the aim of combining the practicality of a hatchback with the sleek look of a coupe. This design allows for a larger cargo area and easier access to the trunk, without sacrificing the car's overall look and feel.

The sportback design also offers better aerodynamics, which can improve fuel efficiency and reduce wind noise while driving. It also gives the car a more aggressive and sporty appearance, making it stand out on the road.