AWS Route 53 Routing Policies: Simple Routing

AWS Route 53 provides various routing policies that determine how DNS queries are resolved. It is important to note that Route 53 does not route traffic like a load balancer. Instead, it resolves DNS queries and returns the appropriate IP address, allowing clients to make direct requests to the endpoint.

In this section, we focus on the Simple Routing Policy, which is the most basic routing option.

🔹 What is the Simple Routing Policy?

The Simple Routing Policy is used when you want to route traffic to a single resource or return multiple IP addresses randomly.

How It Works

1. A client requests foo.example.com.
2. Route 53 responds with an A record containing one or multiple IP addresses.
3. If multiple IPs are returned, the client randomly selects one.

🔹 Key Features

✔ Returns a single or multiple IP addresses.

✔ Client-side random selection when multiple IPs exist.

✔ Works with both A records and Alias records (for AWS resources).

❌ No health checks support.

❌ Cannot control which resource the client picks (random selection).

🔹 Hands-On Example

Step 1: Creating a Simple Routing Record