Version 4 (V4) of the AWS SDK for .NET has been released\!

For information about breaking changes and migrating your applications, see the [migration topic](https://docs.aws.amazon.com/sdk-for-net/v4/developer-guide/net-dg-v4.html).

 [https://docs.aws.amazon.com/sdk-for-net/v4/developer-guide/net-dg-v4.html](https://docs.aws.amazon.com/sdk-for-net/v4/developer-guide/net-dg-v4.html)

# AWS SDKs and Tools Reference Guide
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The [AWS SDKs and Tools Reference Guide](https://docs.aws.amazon.com/sdkref/latest/guide/overview.html) contains information that's relevant and important for many of the AWS SDKs and toolkits and the AWS CLI. The following are some examples of the information that the reference contains:
+ Information about the [shared AWS `config` and `credentials` files](https://docs.aws.amazon.com/sdkref/latest/guide/file-format.html) and their [location](https://docs.aws.amazon.com/sdkref/latest/guide/file-location.html).
+ [Setting up AWS accounts, users, and roles](https://docs.aws.amazon.com/sdkref/latest/guide/access-users.html)
+ [Configuration and authentication settings reference](https://docs.aws.amazon.com/sdkref/latest/guide/settings-reference.html)
+ [AWS Common Runtime (CRT) libraries](https://docs.aws.amazon.com/sdkref/latest/guide/common-runtime.html)
+ [AWS SDKs and tools maintenance policy](https://docs.aws.amazon.com/sdkref/latest/guide/maint-policy.html)
+ [AWS SDKs and tools version support matrix](https://docs.aws.amazon.com/sdkref/latest/guide/version-support-matrix.html)