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Event-Driven Integrations Between Legacy and Modern Systems

July 25, 2026
Event-Driven Integrations Between Legacy and Modern Systems

Batch Jobs Are Bottlenecks

Nightly ETL creates stale dashboards and painful reconciliations. Event-driven integration moves data as business events occur — order placed, invoice paid, ticket closed.

Anti-Corruption Layers

Do not leak legacy schemas into your new services. Translate events at the edge so modern apps speak a clean domain language.

Idempotency and Replay

Assume duplicates. Design consumers to be idempotent and keep dead-letter queues for poison messages. Replayability is your disaster recovery plan.

Start Small

Pick one high-value flow — inventory sync or customer upsert — prove reliability, then expand. Big-bang integrations rarely survive contact with production.

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