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AWS Lambda Durable Execution SDK for .NET now GA

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feature announcement

AWS Lambda Durable Execution SDK for .NET is now generally available, allowing C# developers to build resilient, long-running workflows with durable functions. This SDK simplifies the creation of multi-step applications like payment processing or AI orchestration by automatically checkpointing progress and pausing execution for up to a year. It offers an idiomatic C# experience for tracking progress, integrating callbacks, durable invocation, and efficient suspension, with local testing support. Developers can install it via NuGet and find detailed guides in the Lambda durable functions developer guide.

  • →Build resilient, long-running workflows with C# and Lambda durable functions
  • →Idiomatic C# experience for durable functions
  • →Local testing emulator for development and debugging
  • →Resources for getting started
Features (1) ›
  • Build resilient, long-running workflows with C# and Lambda durable functions

    The AWS Lambda Durable Execution SDK for .NET is now generally available, enabling C# developers to construct multi-step applications like payment processing pipelines and AI agent orchestration. This SDK extends Lambda's event-driven model with operations that automatically checkpoint progress and can pause execution for up to a year while waiting for external events.

Enhancements (2) ›
  • Idiomatic C# experience for durable functions

    The SDK provides an idiomatic C# interface for building with Lambda durable functions, featuring capabilities for progress tracking, human and agent-in-the-loop callback integration, durable invocation for reliable function chaining, and waits for efficient suspension. It is available via NuGet.

  • Local testing emulator for development and debugging

    A local testing emulator is included within the SDK, allowing developers to build and debug their durable execution applications locally before deploying them to production environments. This facilitates a smoother development workflow.

Notes (1) ›
  • Resources for getting started

    Developers can find detailed information and guidance in the Lambda durable functions developer guide and the AWS Lambda Durable Execution SDK for .NET available on NuGet. Regional availability and pricing details are available on the AWS Regional Services List and AWS Lambda Pricing pages.

Read the original announcement →

https://aws.amazon.com/about-aws/whats-new/2026/07/lambdadf-dotnet/

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