Amazon Route 53 is a highly available and scalable Domain Name System (DNS) web service. Amazon Route 53 performs three main functions:
Domain registration – Amazon Route 53 helps lets you register domain names such as example.com.
Domain Name System (DNS) service – Amazon Route 53 translates friendly domains names like www.example.com into IP addresses like 192.0.2.1. Amazon Route 53 responds to DNS queries using a global network of authoritative DNS servers, which reduces latency.
Health checking – Amazon Route 53 sends automated requests over the Internet to your application to verify that it's reachable, available, and functional.
This Amazon Route 53 API Reference explains how to use API actions to create the following resources:
- Public Hosted Zones
A public hosted zone is a container that holds information about how you want to route traffic on the Internet for a domain, such as example.com, and its subdomains.
- Private Hosted Zones
A private hosted zone is a container that holds information about how you want to route traffic for a domain and its subdomains within one or more Amazon Virtual Private Clouds (Amazon VPCs).
- Reusable Delegation Sets
By default, each hosted zone that you create gets a different set of four name servers—a different delegation set. If you create a lot of hosted zones, maintaining different delegation sets can be difficult and time consuming. Amazon Route 53 lets you create a delegation set that you can reuse with multiple hosted zones.
- Resource Record Sets
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.
- Traffic Policies and Traffic Policy Instances
You can create complex routing configurations, known as traffic policies, that use weighted, latency, failover, and geolocation resource record sets. You can then associate a traffic policy with a domain name or subdomain name, such as www.example.com, by creating a traffic policy instance. When users submit DNS queries for the domain or subdomain, Amazon Route 53 responds based on the traffic policy that you used to create the traffic policy instance.
- Health Checks
Amazon Route 53 health checks monitor the health and performance of your web applications, web servers, and other resources. At regular intervals that you specify, Amazon Route 53 submits automated requests over the Internet to your application, server, or other resource to verify that it's reachable, available, and functional.
- Domain Registrations
When you want to get a new domain name, such as example.com, you can register it with Amazon Route 53. You can also transfer the registration for existing domains from other registrars to Amazon Route 53.
A tag is a label that you assign to an AWS resource. Each tag consists of a key and a value, both of which you define. You can use tags for a variety of purposes; one common use is to categorize and track your Amazon Route 53 costs.
In addition, the Amazon Route 53 API Reference includes the following information:
Making API Requests – How to submit HTTP requests to Amazon Route 53
Traffic Policy Document Format – Syntax and examples for the document that you include when you create a traffic policy programmatically
For information about Amazon Route 53 concepts and about how to use the Amazon Route 53 console, see the Amazon Route 53 Developer Guide.