Amazon Simple Workflow Service (Amazon SWF) makes it easy to build applications that coordinate work across distributed components. In Amazon SWF, a task represents a logical unit of work that is performed by a component of your application. Coordinating tasks across the application involves managing intertask dependencies, scheduling, and concurrency in accordance with the logical flow of the application. Amazon SWF gives you full control over implementing tasks and coordinating them without worrying about underlying complexities such as tracking their progress and maintaining their state.

Developer Guide
Provides a conceptual overview of Amazon SWF and includes detailed development instructions for using the various features.
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  API Reference
Describes all the API operations for Amazon SWF in detail. Also provides sample requests, responses, and errors for the supported web services protocols.
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Developer Guide
Looks closely at the AWS Flow Framework for Java, which is a programming framework that enables you to build asynchronous and distributed applications with Amazon Simple Workflow Service using the features of Java.
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  API Reference
Describes all the API operations for the AWS Flow Framework for Java in detail. Also provides sample requests, responses, and errors for the supported web services protocols.
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