How to create a new version of a Lambda function using CloudFormation?

Question

I\'m trying to create a new version of a Lambda function using CloudFormation.

I want to have multiple versions of the same Lambda function so that I can (a) point a

Answer 1

1. We can make a Lambda deployment package;
2. Pass the Lambda package with the version as one of Cloud Formation parameters, e.g. "LambdaPakcageNameWithVersion";
3. Use "LambdaPakcageNameWithVersion" as the Lambda code s3 key;
4. The new Lamdba package will be deployed when running the aws-cli command to update the cloudformation stack or running CI/CD pipeline.

  MyLambda:
    Type: AWS::Lambda::Function
    Properties:
      Role: LambdaRole
      Code:
        S3Bucket: LambdaPackageS3Bucket
        S3Key: !Sub "${LambdaPakcageNameWithVersion}"
      FunctionName: LambdaFunctionName
      Handler: lambda_function.lambda_handler
      Runtime: python3.6
      Timeout: 60