AWS Certified Advanced Networking – Specialty (ANS-C01)Network Management and OperationsHard
A company is experiencing high network latency and jitter for a critical application hosted on EC2 instances when accessing an external third-party API over the public internet. The application is sensitive to network performance, and standard internet connectivity is proving unreliable. They need to optimize the routing of their outbound internet-bound traffic to improve performance and reduce latency. Which AWS service can intelligently route traffic over the AWS global network to minimize latency to internet destinations?
- AAmazon CloudFront with origin failover.
- BAWS Direct Connect.
- CVPC Endpoints (Gateway type).
- DAWS Global Accelerator.
Show answer & explanationAnswer & explanation
Correct answer: D. AWS Global Accelerator.
AWS Global Accelerator uses the AWS global network to route user traffic to the optimal endpoint, significantly improving performance and reducing latency and jitter for internet-bound applications. By providing static anycast IP addresses, it directs traffic to the closest AWS edge location and then routes it over the highly optimized AWS backbone network to the application's internet-facing endpoint.
Why the other options are wrong
- A. CloudFront is a Content Delivery Network (CDN) primarily for caching and serving static/dynamic content closer to users, not for optimizing outbound API calls from EC2 instances.
- B. Direct Connect establishes a private, dedicated connection to AWS from on-premises and does not optimize outbound internet-bound traffic from EC2 instances to external public APIs.
- C. VPC Endpoints (Gateway type) provide private connectivity to S3 and DynamoDB within a VPC, keeping traffic off the public internet for those services, but not for general external API calls.
AWS Global Accelerator
An AWS service that uses the AWS global network to improve the availability and performance of applications for global users by routing traffic to the optimal endpoint.
- Provides static anycast IP addresses.
- Routes traffic over AWS global network.
- Reduces latency and jitter for internet-bound traffic.
Memory trick: Global Accelerator: Your fast lane to the internet's distant shores.