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How Harmonia uses it

DynamoDB owns tenant-scoped workflow truth and atomically records stage outbox entries. SQS transports stage triggers but cannot advance state by itself. Versioned Amazon S3 holds uploaded and generated binary assets while DynamoDB retains identity, lineage, and digests.

DynamoDB

Durable records and transactions.

SQS

At-least-once stage delivery.

Amazon S3

Authorized source and output assets.

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Evidence status

Emulator and contract tests verify local persistence behavior. Cloud resource existence and production data paths require authenticated infrastructure evidence.

DynamoDB

Durable tenant-scoped state and atomic authority.

SQS

Repeatable delivery with application-owned idempotency.

S3 assets

Quarantine, immutable assets, and digest verification.
Last modified on September 14, 2026