Reverse engineering is the process of disassembling and analyzing a product to understand its design, functionality, and how it was made, often with the goal of recreating it or improving upon it. CAD (Computer-Aided Design) is a technology that uses computer software to create, modify, analyze, and optimize designs, often involving 2D drawings or 3D models. Reverse engineering is frequently used in conjunction with CAD to create digital models of physical objects, enabling further analysis, design changes, and manufacturing.