This section describes the important concepts for the Route53 service and for Domain Name System (DNS)
A public hosted zone describes how to route traffic for a public domain, such as example.com, and its subdomains. Information in a public hosted zone is available to anyone that can connect to your Eucalyptus deployment.
A private hosted zone describes how to route traffic for a domain and its subdomains within a VPC managed using Eucalyptus EC2 VPC service. Private zones are useful for repeatable deployments using well-known names.
After you create a hosted zone for your domain, such as example.com, you create resource record sets to tell the Domain Name System (DNS) how to route traffic for that domain.
For example you would create an A record to map the name resource.example.com to the public IP address of an EC2 instance.
Important concepts related to underlying DNS functionality are: