What is the variable valve timing system in the Audi R8?

I am considering buying an Audi R8 and I've heard about their variable valve timing system. Can you explain what it does and how it affects performance?

The variable valve timing system in the Audi R8 is designed to optimize engine performance by adjusting the timing of the intake and exhaust valves.

This system allows for improved fuel efficiency and power output, resulting in a smoother driving experience.