An existing deployment pipeline must shift a small fraction of Lambda alias traffic to a new version and roll back on elevated errors. Which choices support this release? Select 2 answers.

1. Configure appropriate CloudWatch alarms and automatic rollback behavior in the deployment.
2. Send all traffic to the new version immediately while calling the deployment canary.
3. Disable alarms because a version number proves the code works.
4. Overwrite the old release artifact before observing new-version behavior.
5. Use a supported canary deployment configuration for the Lambda alias versions.