Professional-Cloud-DevOps-Engineer Exam Dumps : Google Cloud Certified - Professional Cloud DevOps Engineer Exam

The best option for determining whether the increase in availability is worth the investment for a single year of usage is to calculate the value of improved availability to be $900, and determine that the increase in availability is not worth the investment. To calculate the value of improved availability, we can use the following formula:

Value of improved availability = Revenue * (New availability - Current availability)

Plugging in the given numbers, we get:

Value of improved availability = $1,000,000 * (0.9999 - 0.999) = $900

Since the value of improved availability is less than the investment of $2,000, we can conclude that the increase in availability is not worth the investment.

Rollback to previous stable version. Then you need to find what is causing the issue.

To allow manual QA approval, you need separate pipeline stages (e.g., staging → production) and manual promotion between them.

"Cloud Deploy supports multi-stage pipelines where you can manually approve releases before promotion."

— Cloud Deploy Promotion

"Use a standard strategy when there are no automated tests or SLOs to support rollback decisions."

— Deployment Strategies

Canary is best used when automated health checks and metrics exist, which is not the case here.