Modern applications often need to send notifications across multiple channels either through email and/or SMS. However, building a reliable messaging system that manages templates, handles failures gracefully, scales, and maintains security can be challenging. Following this guide, you’ll learn how to build a template manager and messaging API using API Gateway with JWT authentication for secure access, Amazon SQS for reliable message queuing, AWS Lambda for serverless processing, AWS End User Messaging for SMS, and Amazon Simple Email Service (SES) for email.
Architecture overview
You deploy a decoupled architecture that separates message ingestion from processing, providing resilience and scalability.
Fig. 1 Message Template Manager Architecture
Architecture flow
- Client Application sends authenticated requests with JWT tokens
- API Gateway validates requests using a Lambda Authorizer
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