How does the Audi A7's blind spot monitoring work?

I've heard that the Audi A7 has a great blind spot monitoring feature, but I'm not sure how it actually works. Can someone explain the technology behind it and how it helps in driving?

The Audi A7's blind spot monitoring system uses sensors and cameras to detect vehicles in the adjacent lanes, providing visual and audio warnings if there is a potential collision. It helps prevent accidents and makes lane changing safer.