Modern cloud applications often rely on event-driven architectures to respond to data changes in real time, eliminating the need for manual intervention. Amazon DynamoDB, AWS Lambda, and Amazon EventBridge collectively form the backbone of such systems, enabling developers to create scalable, automated workflows that drive business growth. Learning how to connect these services allows developers to build serverless solutions that respond instantly to user actions, trigger workflows, and handle background tasks efficiently.
In this Cloud Lab, you’ll implement an OTP-based authentication system powered by AWS serverless services. You’ll start by creating DynamoDB tables for storing user data and OTP codes, and enabling DynamoDB Streams to trigger a Lambda function whenever a new OTP is added. Finally, you’ll use EventBridge to schedule automatic OTP deletions, ensuring expired entries are cleaned up.
By the end of this Cloud Lab, you’ll gain practical experience building a fully serverless, event-driven workflow that reacts to database updates and performs scheduled cleanup. This skill set is highly relevant for developers designing scalable authentication systems, IoT backends, or real-time data processing pipelines on AWS.
The following is the high-level architecture diagram of the infrastructure you will create in this Cloud Lab:
