AWS Certified Solutions Architect - Associate SAA-C03 — Topic 1 Question 920

Question

A company is migrating from a monolithic architecture for a web application that is hosted on Amazon EC2 to a serverless microservices architecture. The company wants to use AWS services that support an event-driven, loosely coupled architecture. The company wants to use the publish/subscribe (pub/sub) pattern. Which solution will meet these requirements MOST cost-effectively?

Accepted Answer

Correct answer: D. The correct answer is D. Option D: Configure an Amazon API Gateway HTTP API to invoke an AWS Lambda function that publishes events to an Amazon Simple Notification Service (Amazon SNS) topic. Configure one or more subscribers to receive events from the... AWS Lambda runs code without provisioning servers and scales automatically, which minimizes operational overhead. Amazon SNS is a managed pub/sub service for fan-out notifications to many subscribers. Amazon API Gateway is a fully managed front door for creating and securing APIs at scale. This option delivers the requirement at the lowest cost.

AWS Certified Solutions Architect - Associate SAA-C03 — Question 920