AWS Lambda – Integrations

Common Integrations

• CloudWatch Logs – capture logs for monitoring and debugging.

• SNS – publish/subscribe notifications.

• Cognito – run custom logic during authentication flows.

• SQS – process messages from queues.

• S3 – trigger functions on object creation or deletion.

• Kinesis – process real-time streaming data.

• API Gateway – expose Lambda as REST or WebSocket APIs.

• DynamoDB – respond to table changes via Streams.

• CloudFront – run edge functions (Lambda@Edge).

• CloudWatch Events / EventBridge – trigger functions on a schedule or custom events.

Example: Serverless Thumbnail Creation

1. An image is uploaded to S3.

2. S3 event triggers a Lambda function.

3. Lambda resizes the image to create a thumbnail.

4. Thumbnail is saved back to S3.

5. Metadata (name, size, creation date…) is stored in DynamoDB.

Example: Serverless CRON Job

1. CloudWatch Events or EventBridge generates scheduled events.

2. Event triggers a Lambda function.

3. Lambda executes scheduled logic (e.g., cleanup, reporting).