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Selected:Incident Timeline AnalysisARID (Active Reviews for Intermediate Designs)5 WhysCausal Factor Analysis
| Criterion |  DevOps Incident Timeline Analysis |  Architecture ARID (Active Reviews for Intermediate Designs) |  Operations 5 Whys |  Operations Causal Factor Analysis |
|---|---|---|---|---|
Purposedifferent | For an incident with an unclear sequence, the method makes the timeline precisely visible. It separates perception, reaction, and delay so cause and effect become more clearly readable. | 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. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. | For an event with a complicated course, the method breaks down the contributing factors along the timeline. It shows how conditions, decisions, and reactions together produce a course of events. |
Complexitydifferent | Medium | Medium | Low | High |
Timedifferent | 60-180 min | 2–4 h review as a planning range; preparation and evaluation additional | 15-30 min | 2-6 h |
Participantsdifferent | 3-10 | Designers, developers as users, and facilitation | 2-6 | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Incident Timeline, Evidence Log, Delay Analysis, Improvement Actions | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Root cause notes, Countermeasures | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions |
Tagsno overlap | IncidentTimelineSite Reliability Engineering | ArchitectureEngineeringFeedbackValidationTasks | Root causeIncidentLeanProblem solving | CausalityIncidentRoot causeTimeline |