What is the purpose of the M button on the BMW M3?

I've noticed a button labeled M on the steering wheel of the BMW M3. What is its purpose and how does it affect the car's performance?

The M button is a performance shortcut that allows you to quickly switch to your preferred driving settings. It enhances throttle response, steering, suspension, and even the exhaust sound.

When you press the M button, it activates the M Drive mode, which is a customizable setting that allows you to tailor the car's performance to your liking. You can fine-tune the settings for the engine, suspension, and steering through the iDrive system.