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An architect must design a release process that reduces blast radius by serving the new version to a small percentage of users first. Which pattern fits?
ACanary deployment (gradual % rollout with metrics gating)
BDeploying directly to production without staging
CBig-bang full-fleet redeploy with no rollback path
DDisabling CI/CD entirely
Answer & Solution
Correct answer: A. Canary deployment (gradual % rollout with metrics gating)
Canary releases are the textbook progressive-rollout pattern (per the exam guide §6.3). The others are deployment antipatterns.
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