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.

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

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.

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.

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.

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.

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.

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

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.

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.

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.