Definition
A design process model from the UK Design Council that visualizes work in four phases across two diamonds: Discover (diverge), Define (converge), Develop (diverge), Deliver (converge). The first diamond ensures you solve the right problem; the second ensures you solve it well. PMs use it as a mental model for balancing exploration with focus at each stage of product development.
Why It Matters for Product Managers
Understanding double diamond is critical for product managers because it directly influences how teams prioritize work, measure progress, and deliver value to users. PMs use it as a mental model for balancing exploration with focus at each stage of product development. Without a clear grasp of this concept, PMs risk making decisions based on assumptions rather than evidence, which can lead to wasted engineering effort and missed market opportunities.
How It Works in Practice
Teams typically implement this framework by following a structured process:
The goal is not to follow double diamond dogmatically but to use it as a thinking tool that brings structure to decisions that would otherwise rely on gut feel.
Common Pitfalls
Related Concepts
To build a more complete picture, explore these related concepts: Design Thinking, and Design Sprint. Each connects to this term and together they form a toolkit that product managers draw on daily.