Amazon Simple Queue Service (Amazon SQS)  is a messaging queue service that handles message or workflows between other components in a system.

Getting Started Guide
Introduces you to Amazon SQS, helps you set up an account, and walks you through a simple example to use Amazon SQS for the first time. Also provides tips and links to advanced product features and resources.
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API Reference

Describes all the API operations for Amazon SQS in detail. Also provides sample requests, responses, and errors for the supported web services protocols.


Developer Guide
Provides a conceptual overview of Amazon SQS and includes detailed development instructions for using the various features.
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SQS section of AWS CLI Reference
Describes the AWS CLI commands that you can use to automate queues.