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Criterion
Design sheets and interface cards connect to jointly written pseudocode with highlighted unresolved questions.
Architecture
ARID (Active Reviews for Intermediate Designs)
Paper illustration for Incident Timeline Analysis.
DevOps
Incident Timeline Analysis
Incident Command workspace showing the question, observations, and next decision.
DevOps
Incident Command
Paper illustration for Causal Factor Analysis.
Operations
Causal Factor Analysis
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.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.During an acute incident with several people involved, the method creates a clear leadership and communication structure. It reduces chaos when fast coordination and clean situational awareness are both needed at once.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
MediumMediumMediumHigh
Timedifferent
2–4 h review as a planning range; preparation and evaluation additional60-180 minAs needed2-6 h
Participantsdifferent
Designers, developers as users, and facilitation3-104-153-10
Formatsame
Workshop + asyncWorkshop + asyncWorkshop + asyncWorkshop + async
Outputdifferent
Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisionsIncident Timeline, Evidence Log, Delay Analysis, Improvement ActionsIncident Log, Action Tracker, Stakeholder UpdatesEvent Timeline, Causal Factor Chart, Cause List, Corrective Actions
Tagsno overlap
ArchitectureEngineeringFeedbackValidationTasks
IncidentTimelineSite Reliability Engineering
IncidentOperationsReliability
CausalityIncidentRoot causeTimeline
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