In one sentence
Route 53 selects destinations through DNS, CloudFront caches content at the edge, and Global Accelerator optimizes global network paths.
Key points
- Route 53 routing policies and health checks influence which endpoint a name resolves to.
- CloudFront is a CDN for HTTP content, edge caching, TLS, WAF, and private origins.
- Global Accelerator provides static anycast IPs and accelerates TCP/UDP traffic without caching.
Exam takeaway
These services can be combined because they solve DNS, content delivery, and network-path problems at different layers.
Additional decision dimensions
- Route 53 selects answers at DNS time and is affected by TTL and resolver caches.
- CloudFront is an HTTP/HTTPS CDN that caches content and integrates edge features such as OAC, WAF, Lambda@Edge, and Functions.
- Global Accelerator provides static Anycast IPs and optimizes TCP/UDP paths into AWS without caching content.
- They can be combined: Route 53 → CloudFront or Global Accelerator → regional ALB/NLB and backends.