What are the targets for Alias Records in Route 53?
You cannot set an Alias Record for an EC2 DNS name
What type of DNS record do you need to create to map the apex of a domain to an ELB?
An Alias Record of type A. A CNAME record cannot be used because it is not permitted for the apex of a domain.
What is the difference between Simple Routing Policy with multiple values and the Multi Value Policy?
Multi Value Routing Policy let’s you define health checks and returns only the IP addresses of the healthy values.