Basic Information
| Field | Details |
|---|---|
| English name | AWS Global Accelerator |
| Full name | AWS Global Accelerator |
| Chinese description | 全球网络加速 |
| Japanese description | グローバルアクセラレーター |
| Exam frequency | ⭐⭐⭐⭐ |
| Often confused with | CloudFront / Route 53 / Direct Connect |
In one sentence
Provides static anycast IP addresses and routes TCP/UDP traffic over the AWS global network to healthy regional endpoints.
Key points
- It improves path stability and failover for global applications without caching content.
- Endpoints can include ALB, NLB, EC2 instances, and Elastic IP addresses.
- Health checks move traffic away from unhealthy endpoints.
Exam takeaway
Choose CloudFront for caching HTTP content; choose Global Accelerator for global network acceleration and static entry IPs.
Update: boundary with CloudFront
- Global Accelerator provides two static Anycast IPs, brings TCP/UDP traffic onto the AWS global network early, and selects Regions by endpoint health and weight.
- It does not cache content or understand HTTP paths. Use CloudFront for caching, edge WAF features, and HTTP delivery.
- Route 53 selects DNS answers; Global Accelerator optimizes the connection entry and network path. DNS answer changes do not move existing connections.