How does Audi's active lane assist technology work in the A8?

I've heard that the A8 has an advanced lane keeping system, but I'm not sure how it actually works. Can someone explain the technical details and how it helps with driving?

The A8's active lane assist uses a combination of cameras, sensors, and steering correction to keep the car within its lane. It constantly monitors your position and will gently steer the car back if you start to drift out of the lane.

I've used it on long highway drives and it's a game changer. It takes away the strain of constantly making slight steering adjustments and keeps you centered in the lane.

I was skeptical about the active lane assist at first, but after trying it out I don't think I can go back to driving without it. It's especially useful for avoiding unintentional lane changes on busy roads.