Amazon SNS

Simple Notification Service fans out messages to SQS, Lambda, HTTP, email, and SMS subscribers via topics, with optional FIFO and message filtering.

• Fan-out one event to many consumers
• Alerting via email/SMS
• Integrating CloudWatch alarms with on-call

1. Create a topic, add subscriptions (SQS ARN, Lambda ARN, email).
2. Confirm email subscriptions via the confirmation link.
3. Optionally apply subscription filter policies.

• Route every CloudWatch alarm during a load test to a #qa-loadtest Slack channel via a Lambda subscriber.
• Notify QA when a build artifact lands in S3 (S3 → SNS → email).