AWS Certified Solutions Architect - Associate
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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?
Other
Community
UAnonymous
A
Private endpoint
B
Regional endpoint
C
Interface VPC endpoint
D
Edge-optimized endpoint
Explanation:
Explanation
Edge-optimized endpoint is the correct choice for this scenario because:
-
Geographically distributed users: The web application users are distributed across different geographic locations, which means API requests will come from various regions.
-
Latency reduction requirement: The company specifically wants to reduce latency for API requests.
-
How edge-optimized endpoints work:
- Edge-optimized endpoints are designed for geographically distributed clients
- They use Amazon CloudFront distributions to route requests to the nearest CloudFront edge location
- This reduces latency by bringing the API endpoint closer to users
- API Gateway still executes the API in a single AWS region, but the CloudFront distribution handles request routing
Why other options are incorrect:
- A. Private endpoint: Used for accessing APIs from within a VPC, not for reducing latency for geographically distributed users
- B. Regional endpoint: Best for clients in the same region as the API, but doesn't optimize for geographically distributed users
- C. Interface VPC endpoint: Used for private connectivity to AWS services from within a VPC, not for public API access or latency optimization
Key takeaway: When you need to serve API requests to users across different geographic locations with minimal latency, edge-optimized endpoints are the recommended solution as they leverage CloudFront's global edge network.
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