Dynamic cupping is the same concept as static cupping, however, dynamic cupping adds specific movements such as stretches, to the muscle receiving the therapy. 

Static cupping is used as a soft tissue treatment option to relax muscle tightness and improve performance by relieving trigger points, aka "muscle knots". This is done by putting cups on the muscles that are tight, pumping the air out of the cup, and creating a suction effect on top of the muscle.