Exam Professional Cloud Developer topic 1 question 133 discussion

Option C is correct

C is correct.

The key here is rolling back to the previous deployments if we find issues with the current(latest) deployment. With Canary, only certain portion of the traffic is allowed to newer version that does on the fly testing. With A/B, certain portion of the traffic is split to the dedicated testers to confirm everything is fine with the newer version.

C. Perform a blue/green deployment, and test your new application after the deployment is complete. A Blue/Green deployment is a technique that allows you to release new versions of an application while maintaining the ability to roll back to the previous version if there are issues. It works by having two identical production environments: one, the "green" environment, that is serving traffic, and another, the "blue" environment, that is idle. When you want to release a new version of your application, you deploy it to the "blue" environment, test it to make sure it is working as expected and then switch traffic to the "blue" environment. This way you can have zero-downtime deployment and if there's any issues with the new version you can easily roll back to the previous version by switching the traffic back to the green environment.

C is the answer. https://cloud.google.com/architecture/application-deployment-and-testing-strategies#choosing_the_right_strategy

ABCD can roll back. C the answer becomes because the condition must be an immediate rollback. https://cloud.google.com/architecture/application-deployment-and-testing-strategies#choosing_the_right_strategy

C seems correct

Agree with b/g deployment

Vote C

In my opinion is C! D could work but we do not have detailed information about the traffic (synthetic or not, if we want to move it gradually or not...) for this reason Blue/Green is probably enough

I vote C