Event-driven architecture on AWS: where it wins (and where it hurts)

Event-driven architecture on AWS: where it wins (and where it hurts)

Event-driven systems can unlock resilience and speed—but they can also become a mess of invisible coupling.

Here’s how to get the benefits without the chaos.

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Where event-driven wins

- decoupling teams and systems - smoothing bursts with queues - isolating failures - enabling async workflows

Common failure modes

- unclear event contracts - no idempotency - duplicate processing - missing observability across hops

Practical guardrails

- version your events - design for retries + duplicates - add correlation ids from day one - define ownership per event type

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How PG Technologies helps

We build event-driven systems that stay operable:

- contracts and governance - scalable AWS messaging patterns - observability across services - reliability + cost optimisation

Sources

- Amazon SQS: https://aws.amazon.com/sqs/ - Amazon EventBridge: https://aws.amazon.com/eventbridge/