[Solved] An AWS API Gateway is set up with a POST method integrated with a Lambda function that returns {"message":... What response will the client receive when making a POST request to this endpoint? | AWS

AWS - API Gateway

An AWS API Gateway is set up with a POST method integrated with a Lambda function that returns {"message": "success"}. What response will the client receive when making a POST request to this endpoint?

AThe client receives a JSON response: {"message": "success"}

BThe client receives an empty response with status 204 No Content

CThe client receives a 404 Not Found error

DThe client receives a 500 Internal Server Error

Step-by-Step Solution

Solution:

Step 1: Understand API Gateway Integration
When API Gateway is integrated with a Lambda function, the response from Lambda is passed back to the client.
Step 2: Lambda Function Response
The Lambda function returns a JSON object {"message": "success"} which API Gateway forwards as the HTTP response body.
Final Answer:
{"message": "success"} -> Option A
Quick Check:
Lambda response is proxied by API Gateway [OK]

Quick Trick: Lambda output is returned as API Gateway response body [OK]

Common Mistakes:

Assuming API Gateway modifies the Lambda response automatically
Expecting an empty response when Lambda returns data
Confusing HTTP status codes returned by API Gateway

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More AWS Quizzes

What response will the client receive when making a POST request to this endpoint?

Step 1: Understand API Gateway Integration

Step 2: Lambda Function Response

Final Answer:

Quick Check:

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