Prototyping in Design Thinking is the process of creating a simple model or preliminary version of a product, solution, or idea to test its functionality and usability. It helps designers visualize concepts, identify problems, and gather feedback from users before final development. Prototypes can be low-fidelity (sketches, paper models) or high-fidelity (interactive digital models). This stage encourages experimentation, reduces risks, and improves the final solution through continuous refinement.