What is the purpose of a turbocharger in an Audi vehicle?

I am considering purchasing an Audi and I have heard about the use of turbochargers in their engines. Can someone explain what a turbocharger does and how it benefits the performance of an Audi vehicle?

A turbocharger is a device that utilizes exhaust gases to compress and force more air into the engine, resulting in increased power and torque. In simpler terms, it helps the engine burn more fuel and produce more power. As for how it benefits the performance of an Audi, it allows for smaller, more efficient engines to produce similar power outputs to larger engines, resulting in better fuel economy and performance.