An example SAM template for a Lambda function that's invoked by CloudWatch Events

template.yaml

AWSTemplateFormatVersion: '2010-09-09'
Transform: 'AWS::Serverless-2016-10-31'
Description: An example SAM template for a Lambda function that's invoked by a CloudWatch Event.

Resources:
  MyFunction:
    Type: 'AWS::Serverless::Function'
    Properties:
      FunctionName: MyFunction
      Handler: MyFunction.lambda_handler
      Runtime: python3.7
      CodeUri: ./MyFunction
      Description: A function that is invoked by a CloudWatch Event.
      Events:
        MyCloudWatchEvent:
          Type: Schedule
          Properties:
            # Read more about schedule expressions here: 
            # https://docs.aws.amazon.com/AmazonCloudWatch/latest/events/ScheduledEvents.html
            # This event runs every Friday at 16 UTC/9AM PST
            Schedule: cron(0 16 ? * FRI *)