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AWS Serverless per startup: come innovare senza preoccuparsi dei server

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La tecnologia Serverless sembra essere perfetta per startup. Il modello di pricing “pay-per-use” e l’infrastruttura che non genera alcun costo in mancanza di traffico rende la struttura di costi estremamente economica ed efficiente per le startup. Inoltre, le architetture Serverless sono pienamente gestite e scalano automaticamente, per questo i team non devono preoccuparsi di improvvise crescite del traffico che, per esempio, possono derivare da campagne marketing di successo. Questi sono solo alcuni dei motivi per cui molte startup hanno deciso di costruire architetture Serverless a supporto del proprio business. Durante il webinar, approfondiremo i servizi Serverless di AWS e come le startup possono utilizzarli per aumentare agilità e innovazione. Approfondiremo il servizio AWS Lambda che permette di eseguire codice per qualunque tipologia di applicazione, senza alcun lavoro di “amministrazione”. Durante la sessione, condivideremo inoltre casi d’uso di startup che hanno implementato con successo la tecnologia Serverless.

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AWS Serverless per startup: come innovare senza preoccuparsi dei server

  1. 1. AWS Serverless per startup come innovare senza preoccuparsi dei server Fausto Palma Solution Architect
  2. 2. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 2 What do we mean when we say serverless? 2. Flexible, automated scaling scales by unit of work/consumption rather than by server unit 1. No server management no servers to provision, operate, patch, etc. 3. Automated high availability no need to architect for availability because it is built into the service 4. Pay for value you only pay for unit of work that creates value rather than by server time It is the running your application with your custom code …
  3. 3. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 3 AWS Lambda AWS Fargate Amazon API Gateway Amazon SNS Amazon SQS AWS Step Functions COMPUTE DATA STORES INTEGRATION AWS AppSync Amazon Aurora Serverless Amazon S3 Amazon DynamoDB Amazon EventBridge Serverless stack
  4. 4. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 4 Lambda service Node.js Python Java C# Go Ruby Runtime API Downstream servicesEvent source Changes in data state Requests from endpoints Changes in Resource state Function Lambda service
  5. 5. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 5 Lambda Execution Models Synchronous Stream Downstream services response Asynchronous Retry 1x-3x Downstream services destination Event source Event source Downstream services destination pointer stream Event source Retry until expired
  6. 6. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 6 AWS Lambda AWS Fargate Amazon API Gateway Amazon SNS Amazon SQS AWS Step Functions COMPUTE DATA STORES INTEGRATION AWS AppSync Amazon Aurora Serverless Amazon S3 Amazon DynamoDB Amazon EventBridge Serverless stack
  7. 7. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 7 © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark API Gateway
  8. 8. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 8 Types of APIs: Supported Protocol Details RESTful: HTTP APIs or REST APIs Two way: WebSocket APIs Client Client • Request / Response • HTTP Methods like GET, POST, etc • Short-lived communication • Stateless • 2 way communication channel • Serverless WebSocket • Long-lived communication • Stateful request response Two way communication channel
  9. 9. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 9 API Architecture Websites Services Amazon API Gateway API Gateway Cache (REST only) Public Endpoints on Amazon EC2 Amazon CloudWatch Monitoring All publicly accessible endpoints Lambda Functions Endpoints in VPC Applications & Services in VPC Any other AWS service Fully-managed CloudFront Distribution Edge-OptimizedRegionalPrivate Applications & Services in the same AWS Region AWS Direct Connect On-premises HTTPS Mobile client Customer-managed CloudFront Distribution
  10. 10. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 10 Types of APIs Edge-Optimized (Available with REST APIs) • Uses CloudFront to reduce TLS connection overhead (reduces roundtrip time) • Designed for a globally distributed clients Regional (Available with all types) • Recommended API type for general use cases • Designed for building APIs for clients in the same region Private (Available with REST APIs) • Only accessible from within VPC (and networks connected to VPC) • Designed for building APIs used internally or by private microservices RESTful APIs HTTP APIs are the cheapest, fastest, best choice for building APIs that only require API proxy functionality. For APIs that require API proxy functionality and management features in a single solution, API Gateway also offers REST APIs. WebSocket APIs WebSocket APIs allow you to build real-time two-way communication applications, such as chat apps and streaming dashboards. API Gateway maintains a persistent connection to handle message transfer between a backend service and its clients.
  11. 11. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 11 API Security • IAM Permissions for REST APIs & WebSocket APIs Use IAM policies and AWS credentials to grant users access to APIs • Lambda Authorizers for REST APIs & WebSocket APIs Use Lambda to validate a bearer token (OAuth or SAML as examples) or request parameters and grant access • Cognito User Pools for all RESTful APIs Create a completely managed user management system API Gateway offers several mechanisms for adding Authn/Authz to APIs. All APIs from API Gateway come with industry standard security features such as Native OIDC and OAuth2.
  12. 12. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 12 Infrastructure as code AWS CloudFormation AWS AmplifyAWS SAM AWS CDK
  13. 13. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 13 Example CDK code to create a simple module https://github.com/aws-samples/aws-cdk- examples/tree/master/python/api-sqs-lambda Amazon API Gateway Queue AWS Lambda cdk init Creates a new CDK project in the current directory from a specified template cdk deploy Deploys the specified stack(s) cdk destroy Destroys the specified stack(s)
  14. 14. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 14 © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark Microservices
  15. 15. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 15 Microservices vs monolith applications Each microservice does one thing and stores its own data Microservices The monolith does everything and uses a single data source Monolith Messages and events are the connection between microservices …
  16. 16. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 16 monolithic application + teams 2001 Lesson learned: decompose for agility 2002 microservices Development transformation at Amazon 2 pizza teams Full ownership & autonomy You build it, you run it DevOps – small, nimble teams Focused innovation
  17. 17. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 17 © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark AWS Training & Certifications
  18. 18. © 2020, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark 18 AWS Training & Certification https://www.aws.training: Free on-demand courses to help you build new cloud skills e-Learning: Architecting Serverless Solutions https://www.aws.training/Details/eLearning?id=42594 e-Learning: Getting into the Serverless Mindset https://www.aws.training/Details/eLearning?id=27198 e-learning: Introduction to Serverless Development https://www.aws.training/Details/eLearning?id=27074 e-learning: AWS Lambda Foundations https://www.aws.training/Details/eLearning?id=27197 For more info on AWS T&C visit: https://aws.amazon.com/it/training/ Video: Introduction to Amazon API Gateway https://www.aws.training/Details/Video?id=16452 e-learning: Amazon API Gateway for Serverless Applications https://www.aws.training/Details/eLearning?id=27199 e-learning: Amazon DynamoDB for Serverless Architectures https://www.aws.training/Details/eLearning?id=27196 Video: Serverless Analytics https://www.aws.training/Details/Video?id=26848
  19. 19. Thanks!

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