How do the Audi A2's electromechanical power steering and dynamic steering assist system work?

I recently purchased an Audi A2 and have noticed it has electromechanical power steering and dynamic steering assist. Can someone explain how these systems work and what benefits they provide?

The Audi A2's electromechanical power steering system uses an electric motor to assist in turning the wheels, rather than a traditional hydraulic system. This results in more precise and efficient steering, as well as improved fuel efficiency.

Dynamic steering assist in the Audi A2 is a feature that adjusts the steering ratio based on driving speed and road conditions. This allows for smoother and easier handling, especially at higher speeds.