Lesson 19 / 26

Route 53 (DNS) Basics

Turning domain names into IP addresses, and routing smartly.

What Route 53 does

Route 53 is AWS's DNS service — it resolves domain names to IP addresses or AWS resources, and can also register domains directly.

Routing policies at a glance

Simple (one answer), weighted (split traffic by percentage, e.g. for canary releases), latency-based (send to the fastest region), failover (switch to a backup if health checks fail).

Quick check: You want 5% of traffic to hit a new version for a canary test. Which Route 53 policy fits?

  • Simple routing
  • Weighted routing
  • Failover routing
Answer

Weighted routing — Weighted routing lets you split traffic by percentage between two versions.