Iterative prototyping involves creating successive versions of your prototype based on continuous feedback and testing. Rather than trying to perfect every detail in one go, designers create quick prototypes, gather feedback, and make improvements in focused cycles. This approach helps teams identify and fix usability issues early, while gradually increasing the prototype's fidelity and complexity based on validated learnings.

Each iteration should address specific questions or assumptions about your design. For example, you might start with a low-fidelity prototype testing basic navigation, then iterate to test micro-interactions, and finally create a high-fidelity version to validate the complete experience. The key is to keep each iteration focused and actionable — test, learn, refine, and repeat. This systematic approach prevents teams from getting attached to specific solutions too early and ensures that design decisions are based on real user feedback rather than assumptions.