This PCDOE practice question tests your understanding of bootstrapping a google cloud organization for devops. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company uses Cloud Build for CI/CD. They want to allow Cloud Build to deploy to Cloud Run. What is the minimum IAM role to assign to the Cloud Build service account?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
roles/cloudbuild.builds.builder
Why wrong: Only allows executing builds, not deploying to Cloud Run.
roles/run.admin
Provides full control over Cloud Run services, enabling deployment.
roles/editor
Why wrong: Too broad and grants unnecessary permissions.
roles/run.invoker
Why wrong: Only allows invoking Cloud Run services, not deploying them.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
roles/run.admin
The Cloud Build service account needs permission to create and manage Cloud Run resources, including deploying new revisions. The `roles/run.admin` role provides full control over Cloud Run services, which is the minimum required for deployment. The `roles/cloudbuild.builds.builder` role only allows building and managing Cloud Build triggers, not deploying to Cloud Run.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
roles/cloudbuild.builds.builder
Why it's wrong here
Only allows executing builds, not deploying to Cloud Run.
roles/run.admin
Why this is correct
Provides full control over Cloud Run services, enabling deployment.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
roles/editor
Why it's wrong here
Too broad and grants unnecessary permissions.
roles/run.invoker
Why it's wrong here
Only allows invoking Cloud Run services, not deploying them.
Common exam traps
The trap here is that candidates often confuse the Cloud Build service account's role with the Cloud Build builder role (`roles/cloudbuild.builds.builder`), mistakenly thinking it includes deployment permissions, when in fact it only covers build orchestration.
Detailed technical explanation
Under the hood, Cloud Build uses a service account (default or custom) to execute build steps. When deploying to Cloud Run, the build step typically runs `gcloud run deploy` or uses the Cloud Run Admin API (`run.googleapis.com`). The `roles/run.admin` role includes permissions like `run.services.create`, `run.services.update`, and `run.revisions.create`, which are required to push a new revision. A common real-world scenario is using Cloud Build with a trigger that deploys a container image to Cloud Run; without `roles/run.admin`, the build step fails with a permission denied error.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
What to study next
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Bootstrapping a Google Cloud organization for DevOps — This question tests Bootstrapping a Google Cloud organization for DevOps — Read the scenario before looking for a memorised answer..
The correct answer is: roles/run.admin — The Cloud Build service account needs permission to create and manage Cloud Run resources, including deploying new revisions. The `roles/run.admin` role provides full control over Cloud Run services, which is the minimum required for deployment. The `roles/cloudbuild.builds.builder` role only allows building and managing Cloud Build triggers, not deploying to Cloud Run.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
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