How do I deploy a Lambda function using AWS SAM?

How do I deploy a Lambda function using AWS SAM?

To deploy a Lambda function using AWS SAM, you first need to define your function in a SAM template, then build and deploy it using the SAM CLI.

What does the SAM template look like?

A basic SAM template is a YAML file that defines your Lambda function, its runtime, and any resources it needs. Here's a simple example:

AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Resources:
  MyFunction:
    Type: AWS::Serverless::Function
    Properties:
      Handler: app.lambda_handler
      Runtime: python3.8
      CodeUri: ./src

How do I build and deploy it?

You can build your application using the command sam build, and then deploy it with sam deploy --guided to set up your deployment preferences.

What are the prerequisites for using AWS SAM?

You need to have the AWS CLI installed, Docker for building images, and the AWS SAM CLI installed on your machine.