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Selected:4Ls RetrospectiveLASR (Lightweight Approach for Software Reviews)Blameless PostmortemStart Stop Continue
| Criterion |  Agile 4Ls Retrospective |  Architecture LASR (Lightweight Approach for Software Reviews) |  DevOps Blameless Postmortem |  Agile Start Stop Continue |
|---|---|---|---|---|
Purposedifferent | When a sprint should not only be assessed but also learned from, it captures experience in clear learning categories. It records what worked, what's missing, and what should run differently next time. | LASR helps development teams identify where their software falls short of important quality goals and which improvements to consider. A small group with existing system knowledge can make an initial assessment and investigate open questions in more detail. | 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. | When a team wants to deliberately adjust its working behavior, it makes habits visible and assessable. It focuses on concrete changes instead of diffuse mood. |
Complexitydifferent | Low | Medium | Medium | Low |
Timedifferent | 45–75 min | 3–4 h for initial assessment; preparation and deeper analysis additional | 30-90 min | 30-60 min |
Participantsdifferent | Team members involved | 1 or a small team; particularly suitable for 3–4 people | 3-12 | 3-12 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop |
Outputdifferent | 4Ls Board, Learning Themes, Improvement Actions | Lean Mission Statement describing the software’s purpose, Prioritized quality goals and evaluation criteria, Risks and estimated gaps against quality goals, More closely examined findings and open checks | Postmortem Doc, Action Items, Timeline | Start Stop Continue Board, Improvement Actions |
Tagsno overlap | RetrospectiveLearningReflectionTeam | ArchitectureQualityRiskAssessmentLean | Site Reliability EngineeringIncidentLearningReliability | RetrospectiveImprovementTeamReflection |