SAM hello world, before and after processing into plain Cloudformation

after.yaml

AWSTemplateFormatVersion: 2010-09-09
Outputs:
  HelloWorldApi:
    Description: API Gateway endpoint URL for Prod stage for Hello World function
    Value: !Sub >-
      https://${ServerlessRestApi}.execute-api.${AWS::Region}.amazonaws.com/Prod/hello/
  HelloWorldFunctionIamRole:
    Description: Implicit IAM Role created for Hello World function
    Value: !GetAtt 
      - HelloWorldFunctionRole
      - Arn
  HelloWorldFunction:
    Description: Hello World Lambda Function ARN
    Value: !GetAtt 
      - HelloWorldFunction
      - Arn
Description: |
  hello-sam
  Sample SAM Template for hello-sam
Resources:
  HelloWorldFunctionHelloWorldPermissionProd:
    Type: 'AWS::Lambda::Permission'
    Properties:
      Action: 'lambda:invokeFunction'
      Principal: apigateway.amazonaws.com
      FunctionName: !Ref HelloWorldFunction
      SourceArn: !Sub 
        - >-
          arn:aws:execute-api:${AWS::Region}:${AWS::AccountId}:${__ApiId__}/${__Stage__}/GET/hello
        - __Stage__: Prod
          __ApiId__: !Ref ServerlessRestApi
  HelloWorldFunctionRole:
    Type: 'AWS::IAM::Role'
    Properties:
      ManagedPolicyArns:
        - 'arn:aws:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole'
      AssumeRolePolicyDocument:
        Version: 2012-10-17
        Statement:
          - Action:
              - 'sts:AssumeRole'
            Effect: Allow
            Principal:
              Service:
                - lambda.amazonaws.com
  ServerlessRestApiProdStage:
    Type: 'AWS::ApiGateway::Stage'
    Properties:
      DeploymentId: !Ref ServerlessRestApiDeployment47fc2d5f9d
      RestApiId: !Ref ServerlessRestApi
      StageName: Prod
  ServerlessRestApiDeployment47fc2d5f9d:
    Type: 'AWS::ApiGateway::Deployment'
    Properties:
      RestApiId: !Ref ServerlessRestApi
      Description: 'RestApi deployment id: 47fc2d5f9d21ad56f83937abe2779d0e26d7095e'
      StageName: Stage
  HelloWorldFunctionHelloWorldPermissionTest:
    Type: 'AWS::Lambda::Permission'
    Properties:
      Action: 'lambda:invokeFunction'
      Principal: apigateway.amazonaws.com
      FunctionName: !Ref HelloWorldFunction
      SourceArn: !Sub 
        - >-
          arn:aws:execute-api:${AWS::Region}:${AWS::AccountId}:${__ApiId__}/${__Stage__}/GET/hello
        - __Stage__: '*'
          __ApiId__: !Ref ServerlessRestApi
  ServerlessRestApi:
    Type: 'AWS::ApiGateway::RestApi'
    Properties:
      Body:
        info:
          version: '1.0'
          title: !Ref 'AWS::StackName'
        paths:
          /hello:
            get:
              x-amazon-apigateway-integration:
                httpMethod: POST
                type: aws_proxy
                uri: !Sub >-
                  arn:aws:apigateway:${AWS::Region}:lambda:path/2015-03-31/functions/${HelloWorldFunction.Arn}/invocations
              responses: {}
        swagger: '2.0'
  HelloWorldFunction:
    Type: 'AWS::Lambda::Function'
    Properties:
      Code:
        S3Bucket: temporaryross8
        S3Key: fe9a003d8453352d99b99fc958e64e3b
      Tags:
        - Value: SAM
          Key: 'lambda:createdBy'
      Environment:
        Variables:
          PARAM1: VALUE
      Handler: app.lambda_handler
      Role: !GetAtt 
        - HelloWorldFunctionRole
        - Arn
      Timeout: 3
      Runtime: python3.6

before.yaml

AWSTemplateFormatVersion: '2010-09-09'
Description: 'hello-sam

  Sample SAM Template for hello-sam

  '
Globals:
  Function:
    Timeout: 3
Outputs:
  HelloWorldApi:
    Description: API Gateway endpoint URL for Prod stage for Hello World function
    Value:
      Fn::Sub: https://${ServerlessRestApi}.execute-api.${AWS::Region}.amazonaws.com/Prod/hello/
  HelloWorldFunction:
    Description: Hello World Lambda Function ARN
    Value:
      Fn::GetAtt:
      - HelloWorldFunction
      - Arn
  HelloWorldFunctionIamRole:
    Description: Implicit IAM Role created for Hello World function
    Value:
      Fn::GetAtt:
      - HelloWorldFunctionRole
      - Arn
Resources:
  HelloWorldFunction:
    Properties:
      CodeUri: s3://temporaryross8/fe9a003d8453352d99b99fc958e64e3b
      Environment:
        Variables:
          PARAM1: VALUE
      Events:
        HelloWorld:
          Properties:
            Method: get
            Path: /hello
          Type: Api
      Handler: app.lambda_handler
      Runtime: python3.6
    Type: AWS::Serverless::Function
Transform: AWS::Serverless-2016-10-31