How does the Audi A4's automatic start-stop system work?

I just bought a 2020 Audi A4 and noticed that it has an automatic start-stop system. I've never had a car with this feature before and I'm curious about how it works and if it's worth using. Can anyone provide some insight?

The automatic start-stop system in the Audi A4 works by shutting off the engine when the car is at a complete stop, such as at a stoplight or in heavy traffic. This helps save fuel and reduce emissions. When you release the brake, the engine will start up again automatically. I've found it to be quite useful in saving gas, but some people find it annoying and choose to disable it.