AWS Certified Solutions Architect – Associate (SAA-C03) — Question 542

A company is building a RESTful serverless web application on AWS by using Amazon API Gateway and AWS Lambda. The users of this web application will be geographically distributed, and the company wants to reduce the latency of API requests to these users.

Which type of endpoint should a solutions architect use to meet these requirements?

Answer options

• A. Private endpoint
• B. Regional endpoint
• C. Interface VPC endpoint
• D. Edge-optimized endpoint

Correct answer: D

Explanation

Edge-optimized endpoints route incoming client traffic through Amazon CloudFront edge locations, which minimizes latency for geographically distributed users by leveraging AWS's global network backbone. Regional endpoints are designed for localized traffic within the same AWS Region, whereas private and interface VPC endpoints are meant for securing internal traffic inside a VPC rather than public internet clients.