aws-cdk

Deploy serverless hello world app to AWS using AWS CDK, API Gateway and Lambda (Node.js + TypeScript).

The cdk.json file tells the CDK Toolkit how to execute your app.

AWS services used

• AWS Free Tier
• AWS CDK
• AWS CloudFormation
• AWS S3
• AWS DynamoDB
• AWS ECR
• AWS SSM
• AWS API Gateway
• AWS Lambda (Node.js)
• AWS SDK for JavaScript
• AWS IAM

Steps taken

• Created IAM user with user group that has full access permissions for CloudFormation, API Gateway, Lambda and DynamoDB
• Configured MFA on the IAM user
• Installed AWS CLI tool (MSI installer)
• Installed AWS CDK CLI tool (npm i -g aws-cdk)
• Init a CDK app using cdk init app --language typescript
• Create a hello world Lambda API Gateway
• Extended user group permissions to include full access to IAM, ECR, S3 and SSM
• Run cdk bootstrap to prepare AWS account to deploy CDK apps, it sets up an S3 bucket and a DynamoDB table that the CDK uses to store and manage your deployment assets and state (see CloudFormation > CDKToolkit stack)
• Deploy stack to AWS using cdk deploy
• Test using postman
• Destroy stack from AWS using cdk destroy

Useful commands

• npm run build compile typescript to js
• npm run watch watch for changes and compile
• npm run test perform the jest unit tests
• cdk deploy deploy this stack to your default AWS account/region
• cdk diff compare deployed stack with current state
• cdk synth emits the synthesized CloudFormation template