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A 'cold start' in serverless testing refers to
ASlow shutdown of the function container
BFirst test of a new feature on staging
CFunction deployment to a cold region
DFirst invocation after function spin up
Answer & Solution
Correct answer: D. First invocation after function spin up
Cold start = the latency penalty when the platform must create a new execution environment for the function (load runtime, dependencies, init code). Often a key non-functional concern for latency-sensitive serverless APIs.
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