The structure Amazon likes (talk track) Clarify: source → target, volume, SLA, cutover window, compliance, success metrics Approach: big-bang vs phased, batch vs CDC, backfill + incremental Safety: idempotency, checkpoints, retries, DLQ, reconciliation Cutover: dual-write / read-switch, rollback plan Validation: row counts, checksums, business-level invariants, sampling Ops: monitoring, dashboards, runbook, ownership, on-call, timelines