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SAA-C03 · Question #584

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

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Submitted by neha2k· Mar 4, 2026Design Resilient Architectures

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?

Options

  • AConfigure an Amazon API Gateway REST API to invoke an AWS Lambda function that publishes
  • BConfigure an Amazon API Gateway REST API to invoke an AWS Lambda function that publishes
  • CConfigure an Amazon API Gateway WebSocket API to write to a data stream in Amazon Kinesis
  • DConfigure an Amazon API Gateway HTTP API to invoke an AWS Lambda function that publishes

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