Auto Scaling is a web service designed to launch or terminate Amazon EC2 instances automatically based on user-defined policies, schedules, and health checks.

Developer Guide
Provides a conceptual overview of Auto Scaling and includes detailed instructions for using the various features.
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API Reference
Describes all the API operations for Auto Scaling in detail. Also provides sample requests, responses, and errors for the supported web services protocols.

  Auto Scaling section of the AWS CLI Reference
Describes the AWS CLI commands that you can use to administer Auto Scaling. Provides syntax, options, and usage examples for each command.

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