AWS Launches the.NET 6 Runtime to Lambda Amazon Web Services is enabling.NET-centric cloud developers to complete their serverless computing projects using the latest version of Microsoft’s open-source developer platform. The cloud giant has just launched the.NET 6 runtime to AWS Lambda. AWS announced that the new managed runtime is compatible with both Arm/Graviton2 and x86 processors in a blog post on February 24th. “You can start with.NET 6 or Lambda using your choice of tool, including Visual Studio 2022 with AWS Toolkit For Visual Studio, the.NET CLI and the Amazon.Lambda.Tools worldwide tool and the AWS Serverless Application Model CLI(AWS SAM CLI). Amazon’s extensive.NET documentation on AWS provides all the information you need to use Microsoft’s flagship runtime/developer platform in the AWS cloud. This includes serverless, event-driven computing. AWS documentation shows, for instance, how an old monolithic.NET API project was migrated over to AWS Lambda. (source: AWS). To see a larger version, click on the image. Architecture after migrating to Lambda (source : AWS). This results in a hexagonal pattern of architecture: [Click image for larger view.] The Hexagonal Architecture Pattern (source : AWS). AWS.NET6 support on AWS documentation states: “You can run.NET6 applications targeting x86_64 (AWS Graviton2) on AWS Lambda using any one of the following options.
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  • Managed Runtime – This option uses a.zip file archive to deploy the package.
  • Managed base container image – Pull from the ECR Public Gallery, or use the.NET container image Blueprint in AWS Toolkit Visual Studio.
  • Create a custom container image – This will allow you to include the.NET 6 application inside a container image. This PowerShell script will create a.NET6 base container image.
  • Custom runtime – The custom rantime bundles all the necessary.NET6 libraries in the zip archive that is deployed at Lambda. See this example. This example shows how to create an ARM64.

AWS announced that its serverless developers will now be able to use the most recent languages — C#10 and F# 6 — in addition to being able access to the latest languages — C#10 and F# 6 — AWS also stated that they can now take advantage of a host other.NET 6 features, including:

  • Improved logging
  • Use source generator to serialize JSON
  • Top-level statements
  • ASP.NET Core minimum APIs

AWS also noted the switch to an open source Lambda runtime client, one of many projects that Amazon has open sourced and placed in the aws/aws-lambda-dotnet GitHub repository over the past few years. The open source client for runtime was previously only used in certain situations, such as functions that used Lambda’s custom runtime or container image-based support. AWS stated that the Lambda client experience is consistent and transparent in all environments, including managed runtimes, container images, and Lambda runtime clients for.NET custom runstimes. The switch from the old runtime client to open source runtime clients is seamless as Lambda functions have been migrated to.NET 6. This post also contains instructions for migrating from.NET 6. AWS concluded that they were excited to add support to.NET 6 to Lambda. It’s easy to migrate existing functions to.NET 6 and it’s quick to get started. There are many new features in.NET 6. For more information, see the Lambda Developer Guide.