AWS Certified CloudOps Engineer - Associate
SNS for Operational Alerting
How an alarm notification actually reaches a human: SNS topics and subscriptions, the confirmation step that silently breaks alerting, filter policies, retry behavior per protocol, dead-letter queues, and the KMS permission that stops encrypted topics from receiving alarms.
Intermediate 20 minutes 6 Learning Objectives
- Describe the publisher, topic, and subscription model and the endpoint types SNS can deliver to
- Explain why an unconfirmed email subscription produces an alarm that appears to work but notifies nobody
- Use subscription filter policies to route one topic to different audiences
- Compare SNS retry behavior for AWS managed endpoints and customer managed endpoints
- Configure a dead-letter queue and explain why it attaches to a subscription rather than a topic
- Diagnose an encrypted SNS topic that never receives alarm notifications