AWS Certified Developer – Associate (DVA-C02) — Question 240

A company is creating a REST service using an Amazon API Gateway with AWS Lambda integration. The service must run different versions for testing purposes.

What would be the BEST way to accomplish this?

Answer options

• A. Use an X-Version header to denote which version is being called and pass that header to the Lambda function(s).
• B. Create an API Gateway Lambda authorizer to route API clients to the correct API version.
• C. Create an API Gateway resource policy to isolate versions and provide context to the Lambda function(s).
• D. Deploy the API versions as unique stages with unique endpoints and use stage variables to provide further context.

Correct answer: D

Explanation

Deploying API versions as unique stages with distinct endpoints allows for better management and testing of different versions without interference. This method provides clear separation and can utilize stage variables for context, which is not achievable with headers or authorizers alone. The other options do not provide a robust solution for managing multiple versions effectively.