# Amazon SDK for .NET documentation

The Amazon SDK for .NET makes it easier for Windows developers to build .NET applications that tap into cost-effective, scalable, and reliable Amazon infrastructure services such as Amazon S3, Amazon EC2, and Amazon DynamoDB.

## Latest version (V4)

- [/en_us/sdk-for-net/v4/developer-guide/](/en_us/sdk-for-net/v4/developer-guide/)
- [API Reference](/en_us/sdkfornet/v4/apidocs/): Describes all the API operations for the SDK in detail. Also provides sample requests, responses, and errors for the supported web services protocols.

## Previous version (V3)

- [/en_us/sdk-for-net/v3/developer-guide/](/en_us/sdk-for-net/v3/developer-guide/)
- [API Reference](/en_us/sdkfornet/v3/apidocs/): Describes all the API operations for the SDK in detail. Also provides sample requests, responses, and errors for the supported web services protocols.

## Additional resources

- [Amazon SDKs and Tools Reference Guide](/en_us/sdkref/latest/guide/)

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