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Selected:Blameless Postmortem ARID (Active Reviews for Intermediate Designs)Starfish Retrospective Learning Review

Criterion	DevOps Blameless Postmortem	Architecture ARID (Active Reviews for Intermediate Designs)	Agile Starfish Retrospective	Operations Learning Review
Purposedifferent	After an incident with damage or a near miss, the method creates a sober field for learning without assigning blame. It directs attention to the course of events, conditions, and effective countermeasures.	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 improvement options need to be sorted more finely than just start and stop, it brings observations into clear kinds of action. This makes visible what should be done more, less, newly, or continued.	After a project phase with mixed results, the method makes learning from the individual case reusable. It connects events, decisions, and systemic conditions into robust insights.
Complexitydifferent	Medium	Medium	Low	Medium
Timedifferent	30-90 min	2–4 h review as a planning range; preparation and evaluation additional	45-90 min	1-3 h
Participantsdifferent	3-12	Designers, developers as users, and facilitation	4-12	3-10
Formatdifferent	Workshop + async	Workshop + async	Workshop	Workshop
Outputdifferent	Postmortem Doc, Action Items, Timeline	Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions	Starfish Board, Practice Changes, Experiments	Learning Review Notes, System Factors, Improvement Actions
Tagsno overlap	Site Reliability EngineeringIncidentLearningReliability	ArchitectureEngineeringFeedbackValidationTasks	RetrospectiveImprovementExperimentsTeam	LearningRetrospectiveIncidentOperations

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