Uploaded byIoannis Polyzos
Getting started building your first serverless web application on AWS
The document outlines the process of building a serverless web application on AWS, emphasizing the evolution of computing towards serverless architecture. It explains key components like AWS Lambda and API Gateway, their functionalities, and benefits such as reduced overhead and increased scalability. The document also highlights use cases for serverless applications, including web apps, data processing, and automation.
Getting started building your first serverless web application on AWS
- 1. © 2022, AmazonWeb Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Ioannis Polyzos, Senior Solutions Architect 01/07/2022 Getting started building your first serverless web application on AWS
- 2. © 2022, AmazonWeb Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Agenda • Evolution of computing • What is serverless ? • AWS Lambda • Use Cases • API Gateway • Frameworks • Thank you
- 3. © 2022, AmazonWeb Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. “There is no server better than no server” – Werner Vogels, CTO Amazon
- 4. © 2022, AmazonWeb Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Evolution of computing
- 5. © 2022, AmazonWeb Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Let’s take a look at the evolution of computing Physical Servers in Datacenters Virtual Servers in Datacenters a Virtual Servers in the Cloud
- 6. © 2022, AmazonWeb Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Each progressive step was better Physical Servers in Datacenters a Virtual Servers in the Cloud • Higher utilization • Faster provisioning speed • Improved uptime • Disaster recovery • Hardware independence Virtual Servers in Datacenters • Trade CAPEX for OPEX • More scale • Elastic resources • Faster speed and agility • Reduced maintenance • Better availability and fault tolerance • Better Automation
- 7. © 2022, AmazonWeb Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. What is serverless ? No servers to provision or manage Scales with usage Never pay for idle Availability and fault tolerance build int
- 8. © 2022, AmazonWeb Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Serverless means : Greater agility Less Overhead Better focus Increased Scale More flexibility Faster time to market
- 9. © 2022, AmazonWeb Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. AWS Lambda Zero administration Focus on business logic, not infrastructure. Just upload your code, and AWS Lambda handles the rest. Autoscaling AWS Lambda scales the infrastructure as needed to match the event rate and pay as you go at 100ms intervals. Bring your own code Code in Node.JS, Java, Python or C#. Create threads and processes, run batch scripts or other .exe files. Sync and Async events Respond to application calls with low-latency real-time functions.
- 10. © 2022, AmazonWeb Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. AWS Lambda Event-driven compute Function as a Service Serverless FaaS
- 11. © 2022, AmazonWeb Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. What does Lambda Handle • Load Balancing • Auto Scaling • Handling Failures • Security Isolation • OS Management • Managing Utilization (and much more) for you …
- 12. © 2022, AmazonWeb Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Serverless Lambda Applications Function Services (any) Changes in data state Requests to endpoints Changes in resource state Node.js Python Ruby Java Go .NET
- 13. © 2022, AmazonWeb Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Anatomy of Lambda function import json def lambda_handler(event, context): # TODO implement return { 'statusCode': 200, 'body': json.dumps('Hello from Lambda!') } Handler() function Function to be executed upon invocation Event object Data sent during Lambda function Invocation Context object Methods available to interact with runtime information (request ID, log group, more)
- 14. © 2022, AmazonWeb Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Demo
- 15. © 2022, AmazonWeb Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Lambda pricing • Buy compute time in increments of 1ms ! • Low request change • No hourly, daily or monthly minimums • No per device fees • Never pay for idle
- 16. © 2022, AmazonWeb Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Lambda execution model API Gateway /order Lambda function Synchronous (push) SNS S3 Asynchronous (event) (reqs) Lambda function DynamoDB Kinesis Changes AWS Lambda Service Lambda function Poll Based
- 17. © 2022, AmazonWeb Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Lambda API SDK Clients Lambda directly invoked via invoke API • API provided by the Lambda service • Used by all other services that invoke Lambda across all models • Supports sync and async • Can pass any event payload, structure you want • Client included in every SDK
- 18. © 2022, AmazonWeb Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Lambda permissions model Fine grained security controls for both execution and invocation Execution policies: • Define what AWS resources/API calls can this function access via IAM • Used in streaming invocations e.g. "Lambda function A can read from DynamoDB table users" Function policies: • Used for sync and async invocations • e.g. “Actions on bucket X can invoke Lambda function Z" Resource policies allow for cross account access
- 19. © 2022, AmazonWeb Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Use cases Web Applications • Static Sites • Complex web apps • Packages for Flask and Express Back-Ends • Apps & Services • Mobile • IoT Chatbots • Powering Chatbot logic Data Processing • Real time • Map Reduce • Batch Amazon Alexa • Powering Voice Enabled Apps • Alexa Skills Kit IΤ Automation • Policy Engines • Extending AWS Services • Infrastructure Management
- 20. © 2022, AmazonWeb Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. API Gateway Create a unified API frontend for multiple micro services DDoS protection and throttling for your backend Authenticate and authorize requests to a backend Throttle, meter, and monetize API usage by third-party developers
- 21. © 2022, AmazonWeb Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Demo
- 22. © 2022, AmazonWeb Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Frameworks AWS SAM Serverless AWS Amplify SPARTA Claudia.js … MIDWAY AWS : Third Party :
- 23. © 2022, AmazonWeb Services, Inc. or its Affiliates. All rights reserved. Amazon Confidential and Trademark. Thank you for attending! Ioannis Polyzos Senior Solutions Architect ipolyzos@amazon.com @ipolyzos