AWS SDK for JavaScript
Developer Guide for SDK v2

Amazon S3 Examples

Amazon Simple Storage Service (Amazon S3) is a web service that provides highly scalable cloud storage. Amazon S3 provides easy to use object storage, with a simple web service interface to store and retrieve any amount of data from anywhere on the web.

            Relationship between JavaScript environments, the SDK, and Amazon S3

The JavaScript API for Amazon S3 is exposed through the AWS.S3 client class. For more information about using the Amazon S3 client class, see Class: AWS.S3 in the API reference.