Serverless Architecture Patterns: AWS Lambda, Azure Functions, Vercel

Serverless accelerates delivery but needs careful design for performance and cost. This guide covers patterns and trade-offs across the major platforms.

Patterns

• Queue-based ingestion; event sourcing; scheduled tasks; webhooks

Performance

• Cold start mitigation; provisioned concurrency; bundling; connection reuse

State and idempotency

• Durable functions; idempotency keys; retries/backoff; DLQs

Cost

• Timeouts; memory tuning; concurrency caps; offload heavy work

Appendix — Top‑Up Index (1–200)

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