What is the Double Diamond design process?

The Double Diamond design process, introduced by the British Design Council in 2005, is a structured framework that guides teams through problem identification to solution delivery, divided into two main stages: research (discover and define) and solution (develop and deliver). Each stage consists of divergent and convergent phases, represented by two diamond shapes, allowing designers to explore multiple possibilities before narrowing down the best options. The process emphasizes user-centric design, using methods like user interviews, prototyping, and usability testing to ensure solutions meet user needs and business goals. The model is praised for its flexibility, allowing teams to move between phases as needed, and is adaptable across various industries. A variation called the reverse Double Diamond focuses on developing solutions first and then analyzing their effectiveness, making it suitable for iterative projects. The process encourages creativity, clear problem understanding, and iterative refinement, ultimately leading to effective and user-centered designs.