Networking and Content Delivery
Amazon Route 53
Amazon Route 53 provides authoritative DNS, domain registration, health checks, and traffic-routing policies. It gives GenAI applications stable names and can steer clients across regional API endpoints.
Key points
- Alias records integrate with supported AWS resources
- Weighted, latency, failover, and geolocation policies serve different routing goals
- Health checks affect configured DNS answers rather than moving application state
When to use it
- Fail over an assistant API between approved Regions
- Use weighted records during a regional gateway canary
Exam tips
- Choose Route 53 for DNS routing and Global Accelerator when static anycast IPs and faster health-based network steering are needed
- Respect DNS caching and ensure state or data is available before shifting traffic