A globally distributed product needs an API deployed redundantly across Regions. The API must be independently available from each location, respond to a custom domain, and optimize user request performance. How should Amazon API Gateway and routing be configured to meet these requirements?
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Correct answer: Deploy a regional API Gateway endpoint in every AWS Region where the product is deployed. Create an API Gateway custom domain in each Region and deploy the API there. Configure a Route 53 record with latency-based routing across the custom domains in each Region..
Why this is the answer
The correct solution deploys regional API Gateway endpoints in each AWS Region where the product is present, ensuring independent availability and redundancy. Each regional API Gateway has its own custom domain. Route 53 latency-based routing then directs users to the closest healthy regional API Gateway, optimizing performance. Incorrect options: Deploying a single edge-optimized API in us-east-1 with geoproximity routing doesn't provide independent regional availability or optimal performance for globally distributed users, as all traffic would eventually route to us-east-1. Using a regional endpoint in us-east-1 with Global Accelerator still centralizes the API in one region, failing to meet the requirement for independent availability from each location. An edge-optimized API in us-east-1 fronted by CloudFront also centralizes the API, not providing true regional redundancy and independent availability for the API itself.
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