AWS Certified Developer – Associate (DVA-C02) — Question 23

A company is offering APIs as a service over the internet to provide unauthenticated read access to statistical information that is updated daily. The company uses Amazon API Gateway and AWS Lambda to develop the APIs. The service has become popular, and the company wants to enhance the responsiveness of the APIs.
Which action can help the company achieve this goal?

Answer options

• A. Enable API caching in API Gateway.
• B. Configure API Gateway to use an interface VPC endpoint.
• C. Enable cross-origin resource sharing (CORS) for the APIs.
• D. Configure usage plans and API keys in API Gateway.

Correct answer: A

Explanation

Enabling API caching in API Gateway allows frequently requested data to be stored temporarily, reducing latency and improving response times for clients. The other options, while beneficial for different scenarios, do not directly enhance API responsiveness. For example, configuring an interface VPC endpoint improves security but does not address performance in the same way caching does.