The Amazon SDK for .NET V3 has entered maintenance mode.

We recommend that you migrate to [Amazon SDK for .NET V4](https://docs.amazonaws.cn/sdk-for-net/v4/developer-guide/welcome.html). For additional details and information on how to migrate, please refer to our [maintenance mode announcement](https://aws.amazon.com/blogs/developer/aws-sdk-for-net-v3-maintenance-mode-announcement/).

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