How does the Ford Puma's torque vectoring control improve handling?

I've heard about the torque vectoring control in the Ford Puma, but I'm not sure how it actually improves the handling. Can anyone explain it to me in layman's terms?

Torque vectoring control helps distribute power between wheels to improve traction and cornering.

It uses the brakes on individual wheels to reduce understeer and oversteer.

Torque vectoring control is especially useful for sporty driving and tight corners.