View methods side by side.
Choose up to four methods. Add them using the search and share the comparison by copying its link.
| Criterion |  Architecture ARID (Active Reviews for Intermediate Designs) |  Operations Gemba Walk |  DevOps Game Day |  Operations A3 Problem Solving |
|---|---|---|---|---|
Purposedifferent | ARID examines how well developers can work with a technical design. It focuses on a part of the system that can still be revised, between the architecture overview and the detailed specification. | When there is uncertainty about the real course of a process, the method brings observation to the place where work happens. It combines perception, follow-up questions, and process knowledge so decisions rest on actual workflows instead of assumptions. | In preparing for rare incidents, the method tests response capability under controlled conditions. It shows where assumptions about stability, roles, and recovery are too optimistic. | For a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. |
Complexitydifferent | Medium | Low | High | Medium |
Timedifferent | 2–4 h review as a planning range; preparation and evaluation additional | 30-120 min | Halber Tag | 45-90 min |
Participantsdifferent | Designers, developers as users, and facilitation | 2-6 | 5-20 | 2-5 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop + async |
Outputdifferent | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Observation Notes, Improvement Ideas | Simulation Notes, Gaps List, Updated Runbooks | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | ArchitectureEngineeringFeedbackValidationTasks | LeanObservationProcessOperations | ResilienceOperationsIncident | LeanProblem solvingCoachingOperations |