What is Audi Virtual Cockpit and how does it work on the A3?

I've heard about Audi's Virtual Cockpit, but I'm not sure what it is and how it works on the A3 model. Can someone explain it to me in more detail?

Audi Virtual Cockpit is an innovative digital display technology that replaces the traditional instrument cluster on the A3. It provides a customizable and high-definition view of important driver information and can also display navigation maps and audio controls.

To access the Audi Virtual Cockpit on the A3, simply use the steering wheel-mounted controls to navigate through the different menus and displays. You can also use voice commands to interact with the system.