This is a post by Dave Martin on the PTC site.

The term “CAD” usually refers to either computer-aided drafting (generating 2D production drawings) or computer-aided design (developing 3D solid models of products). However, we’re using CAD tools like Creo Parametric for more than drafting and design. We’re actually performing CAE – computer aided engineering – which incorporates analysis into product design.

Continue Reading on the PTC site…