rapid prototyping.

Proof-of-concept (PoC) prototypes validate ideas and test feasibility early in development. They demonstrate concepts to stakeholders, aid decision-making, and test assumptions with minimal risk before moving to later stages.

Looks-like prototypes focus on visual appearance and user interaction to validate ergonomics and user experience. The process evolves from sketches and simple models to CAD and physical prototypes, with final iterations matching the product's colors, materials, and finishes.

Works-like, or engineering, prototypes are early versions of a product that focus on testing and refining its core functions and technologies. These prototypes may not look like the final product but include essential mechanical and/or electrical systems that need validation.