The double diamond methodology consists of two distinct phases of divergent and convergent thinking. Each "diamond" represents a different stage of understanding and solving product challenges.

Here’s how it works:

1. Discover (First diverge). Gather broad insights — for example, "Our food delivery app's order completion rate dropped 35% this month." Analyze app reviews, interview restaurant owners, track user journeys, and study usage data. You might find issues ranging from slow load times to confusing menu layouts.
2. Define (First converge). Focus findings into specific problems. Rather than "users don't like our app," pinpoint that "users abandon orders because they can't easily modify dishes for dietary restrictions."
3. Develop (Second diverge). Generate multiple solutions — perhaps customization toggles, diet-based filters, or a new allergen tagging system. Create quick prototypes of each approach.
4. Deliver (Second converge). Test solutions with users, measure their effectiveness, and refine the strongest option into a feasible feature that solves the core problem.

This structured process ensures you solve the actual problem rather than just treating symptoms, leading to more effective, long-lasting solutions.