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| Criterion |  Innovation Double Diamond |  Innovation Design Sprint |  Product Discovery Solution Interview |  Innovation Crazy 8s |
|---|---|---|---|---|
Purposedifferent | For complex problems with a fuzzy situation, the method cleanly separates search space and decision. It first creates breadth in understanding and then focus in elaboration. This brings open questions, problem definition, and solution path into a traceable movement. | When the product question is unclear and time pressure is high, the method takes a team from an open idea to a testable solution. It connects problem understanding, decision, and learning in one compact format, lowering the risk of spending a lot of energy on a mere guess. | When a solution idea is already on the table, it checks how it is understood and evaluated. It looks for resonance, objections, and missing fit early in the conversation. | With only a few minutes available and a still-fuzzy solution search, the method forces a wide range of variants. It produces fast sketches before the first idea can settle in, making different directions directly comparable and open to further development. |
Complexitydifferent | Medium | High | Medium | Low |
Timedifferent | Wochen bis Monate | 4-5 Tage | 30-60 min je Interview | 8-15 min |
Participantsdifferent | 3-12 | 5-8 | 5-10 Interviews | 1-10 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | Problem Statement, Solution Options, Prototypes, Deliverables per Phase | Prototype, Test Findings, Decision Rationale | Solution Feedback, Objection List, Validation Notes | Sketch Set, Idea Shortlist, Direction Options |
Tagsno overlap | ProcessDivergenceInnovation | Design sprintPrototypeValidationInnovation | ValidationInterviewsPrototype | BrainstormingSketchingSpeedDivergenceDesign sprint |