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Hello World

You can use the AWM SAM CLI to create, build, and deploy a simple Hello World application.

Create a new application​

Create a new application in a new directory.

sam init

The SAM CLI command above will prompt you with the following options:

Which template source would you like to use?
        1 - AWS Quick Start Templates
        2 - Custom Template Location

Choose 1 and press Enter.

Choose an AWS Quick Start application template
        1 - Hello World Example
        2 - Multi-step workflow
        3 - Serverless API
        4 - Scheduled task
        5 - Standalone function
        6 - Data processing
        7 - Infrastructure event management
        8 - Serverless Connector Hello World Example
        9 - Multi-step workflow with Connectors
        10 - Lambda EFS example
        11 - Machine Learning

Choose 1 and press Enter.

Use the most popular runtime and package type? (Python and zip) [y/N]: y

Would you like to enable X-Ray tracing on the function(s) in your application?  [y/N]: N

Project name [sam-app]: hello-lambda
  1. Enter y to select Python and zip as the most popular runtime and package type.
  2. Enter N to disable X-Ray tracing.
  3. Enter hello-lambda as the project name.

Build and test the application​

Build the application.

cd hello-lambda
sam build

Deploy the application​

Deploy the application.

sam deploy --guided

Test the application​

Test the application using the invoke command.

sam local invoke HelloWorldFunction --event events/event.json