Why does the Audi A4 have an electric compressor?

I've been researching the Audi A4 and noticed that it comes with an electric compressor. What is the purpose of this feature and how does it differ from a traditional turbocharger?

The electric compressor in the Audi A4 is used to improve acceleration and boost power. Unlike a traditional turbocharger, it is powered by an electric motor and does not rely on exhaust gases for its operation.

The electric compressor in the Audi A4 also helps to reduce lag time between pressing the accelerator and the car's response. This means the car will feel more responsive and smooth while driving at low speeds.