Thats the camber and it depending on the type of wing and airspeed it can play a small role in inducing lift.

What's more important is the angle of attack. The leading edge of the wing is grabbing air and pushing it down. Camber helps by creating a low pressure system over the top that sucks the plane up. And finally, the trailing edge helps because you have laminar air leaving the plane at a particular vector, the Koanda effect.

All of these contribute to producing lift.