Amazon CloudFront is a web service that speeds up distribution of your static and dynamic web content, for example, .html, .css, .php, image, and media files, to end users. CloudFront delivers your content through a worldwide network of edge locations. When an end user requests content that you're serving with CloudFront, the user is routed to the edge location that provides the lowest latency, so content is delivered with the best possible performance. If the content is already in that edge location, CloudFront delivers it immediately. If the content is not currently in that edge location, CloudFront retrieves it from an Amazon S3 bucket or an HTTP server (for example, a web server) that you have identified as the source for the definitive version of your content.

Developer Guide
Provides an overview of Amazon CloudFront, detailed feature descriptions, procedures for using the console, and an explanation of the API.
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Quick Reference Card 

Briefly covers the essential commands for using the Amazon CloudFront API.
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  API Reference
Describes all the API operations for Amazon CloudFront in detail. Also provides sample requests, responses, and errors for the supported web services protocols.
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