Question

A development team defines a Lambda function using an AWS::Serverless::Function resource in a SAM template. They want every deployment to automatically publish a new immutable version and point a named alias called 'live' at it, so that CodeDeploy can shift traffic to the newly published version. Which SAM configuration accomplishes this with the least custom scripting?

Accepted Answer

Add the AutoPublishAlias property set to 'live' on the AWS::Serverless::Function resource.

Answer

Set the FunctionName property to include ':live' and enable the Tracing property.

Answer

Add a separate AWS::Lambda::Version resource and reference it manually in every deployment.

Answer

Enable ProvisionedConcurrencyConfig on the function so a new version is created automatically.