DynamoDB Streams to Lambda — Event-Driven Data Pipeline

Build a complete event-driven data pipeline on AWS using DynamoDB Streams and Lambda. You will create a DynamoDB Orders table with a Global Secondary Index, enable Streams, and deploy a Lambda consumer that automatically writes summary records to an OrderAudit table whenever items are inserted or modified.

You'll learn to:

• Create DynamoDB tables with partition keys, sort keys, and on-demand capacity
• Add a Global Secondary Index for alternate query patterns
• Enable DynamoDB Streams with NEW_AND_OLD_IMAGES view type
• Create a Lambda execution role with DynamoDB and CloudWatch permissions
• Deploy a Python Lambda that processes stream events
• Wire an event source mapping from DynamoDB Streams to Lambda
• Query a GSI by a specific partition key

Key Resources:

• DynamoDB Streams Developer Guide
• Lambda with DynamoDB Streams
• Global Secondary Indexes