Create your own AWS lambda function (Server-less)

The page shows how to create a Hello World AWS Lambda function in the AWS Console. It uses the us-east-1 region, chooses the Lambda service, sets the runtime to Node.js 14.x, and deploys a handler from index.js inside the HelloWorld folder.

The sample handler logs functionName, memoryLimitInMB, and the remaining execution time, then builds a todo object with id, description, and isDone fields. It returns a JSON response with statusCode, body, and headers, and the page says this response will be mapped to API Gateway later.

Reading notes

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• Select us-east-1 as the region for the lab resources.
• In the AWS Console, open Lambda from the Services menu and create a function.
• Set the runtime to Node.js 14.x and keep the other options as defaults.
• In the source code screen, open index.js under HelloWorld.
• The handler logs functionName, memoryLimitInMB, and remaining time.
• The response object includes statusCode, body, and headers.
• The body is created from a todo object with id 100, description, and isDone set to false.
• Deploy the function and test it with a new hello-world test event.
• The JSON response is meant to be mapped to the REST API response from API Gateway.