What is the function of the Audi A2's electronic stability control?

I've heard that the Audi A2 has electronic stability control, but I'm not sure what it actually does. Can someone explain how it works and why it's beneficial?

Electronic stability control (ESC) is a feature in the Audi A2 that uses sensors to monitor the vehicle's movement and automatically applies brakes to individual wheels in order to help maintain control in slippery or unstable driving conditions. It can also help prevent the vehicle from skidding or losing traction.

ESC is especially helpful in emergency situations, such as when a driver needs to swerve or make a sudden turn. It can help keep the vehicle stable and prevent it from spinning out of control.