What is Audi A7's Lane Assist feature and how does it work?

I've heard about Audi A7's Lane Assist but I'm not sure exactly how it functions. Can you provide an overview and explain how it helps with driving?

The Audi A7's Lane Assist is a driver assistance feature that uses cameras to detect lane markings and automatically steers the car back into its lane if it senses the vehicle drifting. This not only helps prevent accidents but also reduces driver fatigue on long drives.

Lane Assist also works in conjunction with the adaptive cruise control to maintain a safe distance from the vehicle in front of you while staying within your lane. This technology is especially useful in heavy traffic or during stop-and-go driving.