AWS Certified Solutions Architect – Associate (SAA-C03)Design High-Performing ArchitecturesMedium
A global software company provides a SaaS application that serves customers across North America, Europe, and Asia. The application's backend consists of EC2 instances running in multiple AWS regions. To minimize latency for users worldwide and provide fault tolerance across regions, the company needs a solution that routes user traffic to the nearest healthy application endpoint. Which AWS service should they use?
- AAWS Global Accelerator
- BAmazon Route 53 with Simple Routing Policy
- CElastic Load Balancing (ELB) with Cross-Zone Load Balancing
- DAmazon CloudFront
Show answer & explanationAnswer & explanation
Correct answer: A. AWS Global Accelerator
AWS Global Accelerator improves application availability and performance for global users by directing traffic to optimal healthy endpoints in AWS regions. It uses the AWS global network infrastructure, providing static IP addresses as entry points, which helps reduce latency and ensures high availability.
Why the other options are wrong
- B. Route 53 Simple Routing Policy does not provide latency-based routing or health checks across regions, nor does it use the AWS global network for performance optimization.
- C. ELB with Cross-Zone Load Balancing operates within a single region and distributes traffic across Availability Zones, not across multiple AWS regions globally.
- D. Amazon CloudFront is a Content Delivery Network (CDN) primarily for caching static and dynamic content at edge locations, not for routing real-time application traffic to backend EC2 instances across regions for performance and fault tolerance.
AWS Global Accelerator
A networking service that improves the availability and performance of your applications with local and global users by directing traffic to optimal healthy endpoints.
- Provides static IP addresses as entry points.
- Routes traffic over the AWS global network.
- Reduces latency for global users.
- Improves application availability with health checks and failover across regions.
Memory trick: Global Accelerator: Your fast lane on the AWS superhighway.