Exam Professional Cloud Developer topic 1 question 223 discussion

Splitting traffic between versions using weights is a common way to implement A/B testing. To do this, you would create two versions of your application, one with the new recommendation algorithm and one without. You would then configure the load balancer to split traffic between the two versions using weights. For example, you could configure the load balancer to send 50% of traffic to the new version and 50% of traffic to the old version.

Split traffic is the right answer.

in a randomized way - so its A, D otherwise

https://cloud.google.com/traffic-director/docs/advanced-traffic-management#weight-based_traffic_splitting_for_safer_deployments

https://cloud.google.com/traffic-director/docs/advanced-traffic-management#weight-based_traffic_splitting_for_safer_deployments

option A

A is the answer. https://cloud.google.com/load-balancing/docs/https/traffic-management-global#traffic_actions_weight-based_traffic_splitting Deploying a new version of an existing production service generally incurs some risk. Even if your tests pass in staging, you probably don't want to subject 100% of your users to the new version immediately. With traffic management, you can define percentage-based traffic splits across multiple backend services. For example, you can send 95% of the traffic to the previous version of your service and 5% to the new version of your service. After you've validated that the new production version works as expected, you can gradually shift the percentages until 100% of the traffic reaches the new version of your service. Traffic splitting is typically used for deploying new versions, A/B testing, service migration, and similar processes.

A is the answer

https://cloud.google.com/traffic-director/docs/advanced-traffic-management#weight-based_traffic_splitting_for_safer_deployments

A is the recommended way to test A/B https://cloud.google.com/load-balancing/docs/https/traffic-management-global

https://cloud.google.com/architecture/implementing-deployment-and-testing-strategies-on-gke#split_the_traffic_2 https://cloud.google.com/load-balancing/docs/https/traffic-management-global#traffic_actions_weight-based_traffic_splitting