3D morphing is great for animations that do not require a skeletal structure ...
3D morphing is fairly easy to understand. It is a method of animation where there is a neutral position, and several target deformations or morphs. The software and animator then use those morphs to transition between movements. This can be done between just the neutral position and one target deformation or the neutral position and several target deformations, depending on the complexity needed.
Basically, think about it like striking a pose. Each morph target is a separate pose, which the animator can blend and switch between to simulate movement. This can be done on a large or small scale. The smaller the scale, the more morph targets (generally) the animator will need to use.
3D morphing is great for animations that do not require a skeletal structure, which is why it is often used in concert with 3D rigging. The rig will take care of the motion of the major parts of the 3D object, while 3D morphing will animate the smaller aspects of the object that are outside of the rig’s control. For example, you could set up a rig that moves the legs and arms of the object. Then, in order to simulate a pin pick on the skin, you would use 3D morphing to do the motion of the skin as it is being pricked.