Amazon Route 53 is a highly available and scalable Domain Name System (DNS) web service.

Developer Guide
Provides an overview of Amazon Route 53, detailed feature descriptions, procedures for using the console, and an explanation of how to use the API.
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  API Reference  
Describes all the API operations for Amazon Route 53 in detail. Also provides sample requests, responses, and errors for the supported web services protocols. 
Release notes
Archives (for older versions of the documentation)