# Amazon Command Line Interface Documentation

The Amazon Command Line Interface (Amazon CLI) is a unified tool that provides a consistent interface for interacting with all parts of Amazon Web Services. Amazon CLI commands for different services are covered in the accompanying user guide, including descriptions, syntax, and usage examples.

## Latest version (Version 2)

- [User Guide](/en_us/cli/latest/userguide/): Describes all the Amazon CLI concepts and provides instructions on using the various features of the latest version of the Amazon CLI. Version 2 contains all the latest and adds new features.
- [Command Reference](/en_us/cli/latest/reference/): Describes the latest version of the Amazon CLI in detail and provides basic syntax, options, and usage examples for each operation.

## Previous versions (Version 1)

- [User Guide](/en_us/cli/v1/userguide/): Describes all the Amazon CLI concepts and provides instructions on using the various features of Version 1 of the Amazon CLI. Version 1 is currently still updated but does not include all of the new features the latest version has.
- [Version 1 Command Reference](/en_us/cli/v1/reference/): Describes Version 1 of the Amazon CLI in detail and provides basic syntax, options, and usage examples for each operation.

## Additional resources

- [Amazon SDKs and Tools Reference Guide](/en_us/sdkref/latest/guide/): Amazon SDKs and Tools shared information including shared config and credential files, configuration and authentication settings, Amazon Common Runtime (CRT) libraries, and maintenance and support.

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