Developing serverless applications with .NET using AWS SDK & tools - MAD311 - New York AWS Summit

1. © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.S U M M I T Developing serverless applications with .NET using AWS SDK & tools Steve Roberts Senior Technical Evangelist Amazon Web Services M A D 3 1 1

4. © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.S U M M I T What does the application illustrate? • Developing modern, serverless .NET applications on AWS • Using the AWS SDK and tools for .NET to work with AWS services • AWS Lambda • AWS Batch • AWS Step Functions • Amazon DynamoDB • Amazon Cognito • AWS Systems Manager • Deploying to services using the tools that you are familiar with • AWS Toolkit for Visual Studio • AWS extensions for the dotnet CLI

9. © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.S U M M I T What does tile ingestion do? • It accepts a user’s .zip file that contains multiple images • The .zip file is unpacked, and each image is analyzed to determine the average color • Each image is then resized and saved as a tile in a named gallery

11. © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.S U M M I T Why did we choose AWS Batch? • To take advantage of serverless It manages the compute capacity for us • Work can be queued for asynchronous processing Tile creation is not a time-critical task • Cost savings • No charge for idle compute environments • Ability to use Amazon EC2 spot instances Spot instance(s) On-demand instance(s)

13. © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.S U M M I T Tile gallery ingestion review • Using dead-letter queues (DLQs) to help detect and diagnose failures • Using the AWS .NET Mock Lambda Test Tool to replay and debug failed events in a DLQ • Using AWS Batch

15. © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.S U M M I T What does the mosaic rendering workflow do? • Accepts an image file from the user plus the name of a tile gallery • Analyzes the image against the tile data in the gallery • Builds a new mosaic image using the matched tiles

16. © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.S U M M I T How mosaic rendering works Select tiles (F#) Small render Medium render Large render Completion notification Color map

18. © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.S U M M I T Mosaic rendering workflow review • How to use AWS Step Functions to orchestrate a workflow • Deploying multiple projects with a single serverless template • Using the dotnet lambda CLI global tool to deploy

20. © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.S U M M I T What is the web front end responsible for? • Allowing user registration and authentication • Enabling signed-in users to • Create new tile galleries • Upload an image to create a mosaic

23. © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.S U M M I T Web front end review • Using high-level libraries from AWS to handle • Identity • Data protection (anti-forgery tokens) • Application configuration at runtime • Calling AWS Batch and AWS Step Functions from application code • Deploying containers to AWS Fargate from Visual Studio Can also use the dotnet ecs CLI tool

25. Select tiles (F#) Small Medium Large NotifyMap colors

26. © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.S U M M I T Useful links AWS .NET blog: https://aws.amazon.com/blogs/developer/tag/net/ AWS .NET Twitter handle: @awsfornet GitHub AWS .NET home: https://github.com/aws/dotnet AWS SDK for .NET: https://github.com/aws/aws-sdk-net AWS Lambda for .NET Core: https://github.com/aws/aws-lambda-dotnet AWS .NET Global Tools: https://github.com/aws/aws-extensions-for-dotnet-cli

27. © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.S U M M I T Additional extension libraries on GitHub ASP.NET Core identity provider for Amazon Cognito: https://github.com/aws/aws-aspnet-cognito-identity-provider IConfiguration provider for AWS Systems Manager Parameter Store: https://github.com/aws/aws-dotnet-extensions-configuration ASP.NET Core DataProtection provider for AWS Systems Manager: https://github.com/aws/aws-ssm-data-protection-provider-for-aspnet

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