Question

A company hosts a public website on an Application Load Balancer (ALB). They own the domain example.com in a Route 53 public hosted zone and need requests to the zone apex (example.com, with no subdomain) to resolve directly to the ALB. When the SysOps administrator attempts to create a standard CNAME record for example.com pointing to the ALB's DNS name, Route 53 rejects the configuration. What should the administrator do to correctly route apex traffic to the ALB?

Accepted Answer

Create a Route 53 Alias record (type A) for example.com that targets the ALB's DNS name.

Answer

Create a standard A record for example.com with the static public IP addresses of the ALB.

Answer

Create a CNAME record for example.com and lower the TTL to 60 seconds so it is accepted.

Answer

Create an NS record delegating example.com to the ALB's DNS name.