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+# Incident Response Reference
+
+Quick reference guides for incident severity classification, communication templates, root cause analysis techniques, and runbook structure.
+
+## Available References
+
+### Incident Severity Matrix
+
+**File**: [incident-severity-matrix.md](incident-severity-matrix.md)
+
+Complete severity classification guide with examples:
+- **SEV1 (Critical)**: Complete outage, all customers affected, revenue stopped
+- **SEV2 (Major)**: Partial degradation, significant customer impact
+- **SEV3 (Minor)**: Isolated issues, workarounds available
+- **SEV4 (Cosmetic)**: UI issues, no functional impact
+
+**Use when**: Classifying incident severity, determining escalation path
+
+---
+
+### Communication Templates
+
+**File**: [communication-templates.md](communication-templates.md)
+
+Ready-to-use templates for all incident communications:
+- Internal updates (Slack, email)
+- External communications (status page, customer emails)
+- Executive briefings
+- Post-incident summaries
+- Postmortem distribution
+
+**Use when**: Communicating during or after incidents
+
+---
+
+### Root Cause Analysis Techniques
+
+**File**: [rca-techniques.md](rca-techniques.md)
+
+Comprehensive RCA methodology guide:
+- **5 Whys**: Iterative questioning to find root cause
+- **Fishbone Diagrams**: Category-based analysis
+- **Timeline Reconstruction**: Event sequencing and correlation
+- **Contributing Factors Analysis**: Immediate vs underlying vs latent causes
+- **Hypothesis Testing**: Data-driven validation
+
+**Use when**: Conducting root cause analysis, writing postmortems
+
+---
+
+### Runbook Structure Guide
+
+**File**: [runbook-structure-guide.md](runbook-structure-guide.md)
+
+Best practices for writing effective runbooks:
+- Standard runbook template
+- Diagnostic procedures
+- Remediation steps
+- Escalation paths
+- Success criteria
+- Runbook maintenance
+
+**Use when**: Creating or updating runbooks, automating diagnostics
+
+---
+
+## Quick Links
+
+**By Use Case**:
+- Need to classify incident severity → [Severity Matrix](incident-severity-matrix.md)
+- Need to communicate during incident → [Communication Templates](communication-templates.md)
+- Need to find root cause → [RCA Techniques](rca-techniques.md)
+- Need to write a runbook → [Runbook Structure Guide](runbook-structure-guide.md)
+
+**Related Documentation**:
+- **Examples**: [Examples Index](../examples/INDEX.md) - Real-world incident examples
+- **Templates**: [Templates Index](../templates/INDEX.md) - Incident timeline, postmortem templates
+- **Main Agent**: [incident-responder.md](../incident-responder.md) - Incident responder agent
+
+---
+
+Return to [main agent](../incident-responder.md)