App Engine standard hosts a website. Send 1% of users to a new test version with minimal complexity. What should you do?

The correct option leverages App Engine's built-in traffic splitting feature, which is designed for A/B testing and canary deployments. The --splits option with gcloud app deploy allows you to define traffic distribution percentages between different versions of your application within the same App Engine service. Assigning 99% to the current version and 1% to the new version achieves the desired minimal complexity for testing. The --migrate option is used to migrate traffic entirely to a new version, not split it. Creating a new App Engine application in the same project and manually proxying requests or configuring a network load balancer introduces unnecessary complexity and management overhead, as App Engine provides this functionality natively and efficiently.