What's new in the Amazon SDK for .NET - Amazon SDK for .NET (V3)
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Version 4 (V4) of the Amazon SDK for .NET has been released!

To start using the new version of the SDK, see the Amazon SDK for .NET (V4) Developer Guide, especially the topic for Migrating to version 4.

What's new in the Amazon SDK for .NET

For high-level information about new developments related to the Amazon SDK for .NET see the product page at http://www.amazonaws.cn/sdk-for-net/ and the SDK change logs.

The following is what's new in the Amazon SDK for .NET.

May 5, 2025: General availability of the Amazon Message Processing Framework for .NET

The Amazon Message Processing Framework for .NET is generally available! The framework is an Amazon-native framework that simplifies the development of .NET message-processing applications that use Amazon services such as Amazon Simple Queue Service (SQS), Amazon Simple Notification Service (SNS), and Amazon EventBridge.

April 28, 2025: Version 4 of the Amazon SDK for .NET

Version 4 of the Amazon SDK for .NET is generally available! For more information, see the Amazon SDK for .NET (V4) Developer Guide, especially the topic for Migrating to version 4.

February 15, 2025: Integrations with .NET Aspire

Integrations with .NET Aspire to improve the inner dev loop have been released. For information, see Integrating Amazon with .NET Aspire in the Amazon SDK for .NET.

February 10, 2025: GA release for observability

Observability is the extent to which a system's current state can be inferred from the data it emits. Observability has been added to the Amazon SDK for .NET, including an implementation of a telemetry provider. For more information, see Observability in this guide and the blog post Announcing the general availability of Amazon .NET OpenTelemetry libraries.

January 15, 2025: New default behavior for integrity protection

Beginning with version 3.7.412.0 of the Amazon SDK for .NET, the SDK provides default integrity protections by automatically calculating a CRC32 checksum for uploads. For more information, see the announcement on GitHub at https://github.com/aws/aws-sdk-net/issues/3610. The SDK also provides global settings for data integrity protections that you can set externally, which you can read about in Data Integrity Protections in the Amazon SDKs and Tools Reference Guide.

November 15, 2024: Blog post for preview 4 release for version 4

Preview 4 of the Amazon SDK for .NET Version 4 was released on November 15, 2024. For more information about this preview, see the blog post Preview 4 of Amazon SDK for .NET V4.

August 16, 2024: Blog post for preview 1 release for version 4

The Amazon SDK for .NET Version 4 was released as a first preview on August 16, 2024. For more information about this preview, see the blog post Preview 1 of Amazon SDK for .NET V4.

February 23, 2024: Added support for .NET 8

Support for .NET 8 was added to the Amazon SDK for .NET. Use the latest NuGet packages or the assemblies that support .NET 8 and later. You can find additional information about this support, including support for Lambda in the blog post .NET 8 Support on Amazon.

February 18, 2024: Upcoming changes to .NET Framework support

Starting August 15th, 2024, the Amazon SDK for .NET will end support for .NET Framework 3.5 and will change the minimum .NET Framework version to 4.7.2. For more information, see the blog post Important changes coming for .NET Framework 3.5 and 4.5 targets of the Amazon SDK for .NET.

2023-07-17: The Amazon Lambda Annotations framework has been released for general availability

The Amazon Lambda Annotations framework makes the experience of writing Lambda functions in C# feel more natural for .NET developers by using C# source generator technology. It is now generally available.

Note

This is prerelease documentation for a feature in preview release. It is subject to change.

2020-08-24: Version 3.5 of the SDK has been released

  • Standardized the .NET experience by transitioning support for all non-Framework variations of the SDK to .NET Standard 2.0. See Migrating to version 3.5 for more information.

  • Added paginators to many service clients, which make pagination of API results more convenient. For more information, see Paginators.