Application Integration
CoreAmazon SNS
Publish-subscribe notification and event fan-out for pipeline subscribers.
Key points
- SNS publishes a message to multiple subscribers and is well suited to operator notifications or event fan-out.
- Delivery to subscribers does not provide the same worker-buffering and per-message processing model as a queue.
Best-known use cases
- Fan out pipeline events to multiple subscribers.
- Notify operators when data jobs fail or quality alarms fire.
What candidates often confuse it with
- SNS fans out notifications; SQS durably buffers work for consumers that process at their own pace.
Key takeaway
Choose SNS when one pipeline event must notify or fan out to multiple subscribers.
Relevant exam tasks
- D1.3 — Task 1.3: Orchestrate data pipelines
- 1.3.4 — Use notification services to send alerts (for example, Amazon SNS, Amazon SQS).
- D3.3 — Task 3.3: Maintain and monitor data pipelines
- 3.3.3 — Use notifications during monitoring to send alerts.