As cloud-native architectures become the norm, developers are increasingly turning to event-driven design for building scalable and loosely coupled applications. One powerful pattern in this space leverages AWS Lambda in combination with DynamoDB Streams. This setup enables real-time, serverless responses to data changes—without polling or manual infrastructure management.
This article explains how to implement an event-driven system using DynamoDB Streams and AWS Lambda. A step-by-step implementation example using LocalStack is also included to demonstrate how the architecture can be simulated locally for development and testing purposes.
