AWS Certified Advanced Networking – Specialty (ANS-C01)Network ImplementationMedium
A development team needs to deploy a web application that will be accessed by users globally. The application requires a single, static entry point (IP address) for users, and traffic needs to be routed to the nearest healthy endpoint in one of three AWS Regions (`us-east-1`, `eu-central-1`, `ap-northeast-1`). The solution must also improve performance by routing user traffic over the AWS global network backbone. Which AWS service should be used?
- AAmazon Route 53 with latency-based routing
- BAWS Transit Gateway with inter-Region peering
- CApplication Load Balancer (ALB) with cross-Region load balancing
- DAWS Global Accelerator
Show answer & explanationAnswer & explanation
Correct answer: D. AWS Global Accelerator
AWS Global Accelerator provides static IP addresses as a fixed entry point and uses the AWS global network backbone to route user traffic to the closest healthy endpoint. This significantly improves performance for global applications and offers faster failover than DNS-based solutions.
Why the other options are wrong
- A. Route 53 with latency-based routing provides a dynamic IP through DNS resolution and does not guarantee routing over the AWS global backbone for the entire path, nor does it provide static IPs.
- B. Transit Gateway with inter-Region peering connects VPCs and on-premises networks across Regions but does not provide a static global entry point for end-users or optimize user-to-application traffic over the AWS backbone directly.
- C. ALB is a Regional service and does not provide a single static global IP or route traffic across Regions using the AWS backbone for performance optimization.
AWS Global Accelerator
An AWS networking service that improves the availability and performance of applications by directing user traffic to optimal endpoints over the AWS global network backbone.
- Provides two static Anycast IP addresses
- Routes traffic over AWS global network
- Improves performance and availability for global users
- Supports faster failover than DNS-based solutions
Memory trick: Global Accelerator: Static IP, Global Path, Accelerated Speed.