Hi Michele! Lower Body Blast is designed to focus on sculpting the lower body while keeping the body in fat burning mode. Cardio is not the main ingredient in this workout, it is an enhancer.
Therefore the workout opens w/a warm up and a short cardio segment to get the body in fat burning mode. Then the focus shifts to lower body scuplting (concentrating on the large muslce groups of the legs to keep the body in fat burning mode). After every few exercises a cardio burst will be thrown in which is like a one minute plyometric blast. This recruits more muscle fibers and makes the legs more responsive to the next round of exercises. This pattern goes on until the tape ends. So I would not classify this as being in the lines of HIIT, BM2,or CCC. But I will say that it works like a charm and will have your legs DOMS'd up the next day