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+# AWS Lambda — Study notes & sandbox
+
+Study site built on top of a working Lambda + MinIO sandbox. Read the page, run the code, break things on purpose.
+
+## Foundations
+
+- [01 — Overview](lambda-01-overview.md)
+- [02 — Mental Model](lambda-02-mental-model.md)
+- [03 — Limits](lambda-03-limits.md)
+
+## Operating
+
+- [04 — Cold Starts](lambda-04-cold-starts.md)
+- [05 — Concurrency](lambda-05-concurrency.md)
+- [06 — Triggers](lambda-06-triggers.md)
+- [07 — IAM & Permissions](lambda-07-iam.md)
+- [08 — Packaging](lambda-08-packaging.md)
+- [09 — VPC & Networking](lambda-09-vpc-networking.md)
+
+## Production
+
+- [10 — Observability](lambda-10-observability.md)
+- [11 — Async & Errors](lambda-11-async-errors.md)
+- [12 — Step Functions](lambda-12-step-functions.md)
+- [13 — Cost](lambda-13-cost.md)
+- [14 — Local Dev](lambda-14-local-dev.md)
+- [15 — CI/CD](lambda-15-cicd.md)
+
+## Reference
+
+- [16 — Pitfalls](lambda-16-pitfalls.md)
+- [17 — Adjacent](lambda-17-adjacent.md)
+- [18 — Labs](lambda-18-labs.md)
+- [19 — Repository](lambda-19-repository.md)
+
+## Graphs
+
+- [System overview](lambda-system_overview.svg)
+- [Lifecycle](lambda-lifecycle.svg)
+- [Cold vs warm timeline](lambda-cold_warm_timeline.svg)