Version 4 (V4) of the Amazon SDK for .NET has been released\$1

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

 [https://docs.amazonaws.cn/sdk-for-net/v4/developer-guide/net-dg-v4.html](https://docs.amazonaws.cn/sdk-for-net/v4/developer-guide/net-dg-v4.html)

# Using Amazon Lambda for compute service
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The Amazon SDK for .NET supports Amazon Lambda, which lets you run code without provisioning or managing servers. For more information, see the [Amazon Lambda product page](http://www.amazonaws.cn/lambda/) and the [Amazon Lambda Developer Guide](https://docs.amazonaws.cn/lambda/latest/dg/), particularly the section for [Working with C\$1](https://docs.amazonaws.cn/lambda/latest/dg/lambda-csharp.html).

## APIs
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The Amazon SDK for .NET provides APIs for Amazon Lambda. The APIs enable you to work with Lambda features such as [functions](https://docs.amazonaws.cn/lambda/latest/dg/gettingstarted-concepts.html#gettingstarted-concepts-function), [triggers](https://docs.amazonaws.cn/lambda/latest/dg/gettingstarted-concepts.html#gettingstarted-concepts-trigger), and [events](https://docs.amazonaws.cn/lambda/latest/dg/gettingstarted-concepts.html#gettingstarted-concepts-event). To view the full set of APIs, see [Lambda](https://docs.amazonaws.cn/sdkfornet/v4/apidocs/items/Lambda/NLambda.html) in the [Amazon SDK for .NET API Reference](https://docs.amazonaws.cn/sdkfornet/v4/apidocs/).

The Lambda APIs are provided by [NuGet packages](https://www.nuget.org/packages?page=2&q=aws%20lambda&sortBy=relevance).

## Prerequisites
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Before you begin, be sure you have [set up your environment](net-dg-config.md) and [configured your project](configuring-the-sdk.md). Also review the information in [Using the SDK](net-dg-sdk-features.md).

## Additional information
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See [Integrating Amazon with .NET Aspire](aspire-integrations.md) for information about developing with Amazon Lambda through .NET Aspire.

## Topics
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**Topics**
+ [APIs](#w2aac19c17b5)
+ [Prerequisites](#w2aac19c17b7)
+ [Additional information](#w2aac19c17b9)
+ [Topics](#w2aac19c17c11)
+ [Lambda Annotations](aws-lambda-annotations.md)