What is the function of a power distribution box in an Audi A4?

I recently purchased a used Audi A4 and noticed a power distribution box under the hood. What is its purpose and how does it work?

The power distribution box in an Audi A4 is responsible for distributing electrical power to various components of the car. It acts as a central hub, receiving power from the battery and then routing it to the necessary systems and components. Without it, your car would not receive the proper amount of power and many important functions would not work properly.