# Amazon SDK for Ruby Documentation

The Amazon SDK for Ruby helps you to get started building applications using Amazon Web Services infrastructure services, including Amazon S3, Amazon EC2, Amazon DynamoDB, and more.

## Latest version (Version 3)

- [Developer Guide](/en_us/sdk-for-ruby/v3/developer-guide/): The Developer Guide walks you through the getting-started process and how to work with various features of the Amazon SDK for Ruby.
- [API Reference](/en_us/sdk-for-ruby/v3/api/): The API reference guide describes all of the API operations for the SDK. The guide also contains sample requests, responses, and errors for supported Amazon services.

## Previous version (Version 2)

- [API Reference](/en_us/sdk-for-ruby/v2/api/): The API reference guide for version 2 of the Amazon SDK for Ruby describes all the API operations for version 2 of the SDK. The guide also contains sample requests, responses, and errors for supported Amazon services.

## Additional resources

- [Amazon SDKs and Tools Reference Guide](/en_us/sdkref/latest/guide/)
- [Version 1 API Reference](/en_us/sdk-for-ruby/v1/api/): Version 1 should not be used by new users or new applications. These links are only for developers who need to work with existing code that depends on version 1. This API reference describes all the API operations for version 1 of the SDK in detail. Also provides sample requests, responses, and errors for the supported Amazon services.

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