The Complete Guide to Build Serverless Applications on AWS

Design a serverless AWS-based architecture for the National Fuel Path app, enabling registration, OTP verification, and QR code issuance for fuel access.

Design a scalable serverless AWS architecture with passwordless OTP authentication, store user and vehicle data, verify details via external systems, deliver QR codes via SMS securely and asynchronously.

Design a serverless first frontend architecture using S3 static hosting and CloudFront caching, with Amazon Incognito passwordless authentication via OTP and SNS for SMS delivery, plus Amplify token management.

Verify OTP and collect user details, then trigger a register flow through API gateway and a user register Lambda. Store the data in a DynamoDB user table for next steps.

Evaluate the user registration architecture across scalability, cost, security, and complexity using serverless services. Highlight security controls like CloudFront with origin access identity and Cognito tokens, and reserve Lambda concurrency.

Explore how EventBridge enables easy extension of serverless applications by ingesting events, using rules to filter corporate events, and routing them to the appropriate external systems.

Discover a scalable serverless architecture using event bridge, lambda, and queue-based controls to throttle concurrent vehicle registrations, with asynchronous flow, dead letter queue, and sms-enabled qr code delivery.

Discover how to implement idempotency in serverless AWS workloads using DynamoDB conditional writes, Lambda Power Tools, and idempotency keys to prevent duplicate records or charges in Express Workflows.

Explore AWS Lambda as the core serverless, event-driven engine. Trigger it by events like HTTP, S3, and DynamoDB streams to fetch weather data and create thumbnails.

Learn to access AWS Lambda from the console, create functions from scratch or via blueprint or container image, select runtime, set triggers, and note infrastructure as code with serverless framework.

Explore amazon api gateway, a fully managed restful api service for web, mobile, and private networks, with caching, authorization, lambda and dynamo db integrations.

Explore Amazon CloudWatch as a centralized logging and observability service that collects logs from cloud resources, applications, and on-premises servers, enabling custom metrics, alarms, and automated responses with AWS Lambda.

Discover how AWS CloudWatch manages logs with log groups and streams and sets retention policies. Learn to create metric and subscription filters, trigger alarms, and integrate with Lambda for observability.

Explore the architecture of a serverless note-taking app built with api gateway, lambda, and dynamodb, using infrastructure as code with the serverless framework, rest api, and crud operations.

Configure AWS credentials by creating an IAM user with administrator access, generate an access key and secret, and set up credentials locally using npm run sls config credentials.

Explore API gateway routes for node CRUD operations to Lambda functions via proxy integration, reviewing the dev stage in us east 2 and the get all nodes flow.

Implement an update node function for DynamoDB, granting update item permission, and use an update expression with attribute names/values and attribute_exists to return 200 on success or 500 on error.

Learn to replace hardcoded notes table names with environment variables in serverless.yml at the provider level, reference them in lambdas via process.env and href, then redeploy and test the endpoints.

Set up Visual Studio Code as your code editor, then install the serverless framework CLI globally with npm. Use serverless framework v2 to build serverless applications on AWS.

Create the first AWS Lambda function and connect it to API Gateway to expose a post /notes endpoint, deploy with Serverless, and test using Postman.

Learn how to grant per-function DynamoDB put item permissions using an IAM role for the function, leveraging a serverless plugin and CloudFormation intrinsic functions to reference the table.

Explore optimizing serverless lambdas by preventing event loop waits. Set context.callbackWaitsForEmptyEventLoop to false so callbacks return immediately, then apply to create, update, delete, and get functions and deploy.

Enable http keep-alive to reuse connections in lambda invocations. Configure an environment variable to enable reuse, reducing latency when lambda functions call the AWS SDK and DynamoDB.

Learn to configure API key access with the serverless framework, replacing console-based setup, by defining usage plans, API keys, and throttling in serverless.yml for AWS API gateway.

Explore how a Lambda authorizer controls access to API Gateway endpoints, inspect policy documents and authorizer context in CloudWatch logs, and share context across downstream Lambda functions.

Explore how Cognito user pool authorizers validate access by user pool membership alone, not IAM roles or groups, and how to enforce denies with API gateway using optional Lambda authorizers.

Automate creation of a Cognito user pool, its client, and domain with CloudFormation via the Serverless Framework, using infrastructure as code for production-ready authentication.

Replace hardcoded values with environment variables in your serverless AWS app by using CloudFormation intrinsic functions to fetch the user pool attributes and pass them to Lambda handlers.

This lecture demonstrates configuring multi-environment deployments with the serverless framework by using a command-line stage parameter, default values, and dynamic resource naming.

Test the serverless environment by creating a user, obtaining authorization tokens, updating api gateway endpoints, and performing authenticated note creation and retrieval with DynamoDB.

Compare continuous integration, continuous delivery, and continuous deployment; learn how build, test, and package steps transition with a manual review quality gate in a mature deployment pipeline.

Diagnose the deployment failure by inspecting the build tail for the forbidden Cerberus error during serverless deploy, then grant administrator access to the codebuild service role and rerun.

Discover how to use GitHub Actions to build a simple seed continuous delivery pipeline for code on GitHub, with build specs in code and event-driven triggers, plus Serverless Framework integration.

Demonstrates deploying a production serverless workflow on AWS by installing the serverless plugin in GitHub Actions, configuring a production stage, and verifying API Gateway, Lambda endpoints, and DynamoDB resources.

Explore the test honeycomb strategy for serverless microservices, prioritizing integration and acceptance tests over unit tests, and apply it to API gateway, Lambda functions, and DynamoDB.

Configure and test the AWS Cognito Admin API by initializing environment variables, creating an authenticated user in the user pool, and obtaining an ID token to drive admin flows.

Create a test to add a new node with id 1000, title and description, using an id token, via the nodes post endpoint, and verify a 201 response.

Fix the caching issue by reworking the lambda authorizer policy to split API gateway resources and use wildcards, reducing latency while ensuring create, update, and delete notes tests pass.