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Which CI/CD pattern should an ML Engineer adopt for automated MODEL RETRAINING when new data arrives — referenced in PMLE §5.2?

ACloud Memorystore
BCloud DNS
CManually retraining whenever someone remembers
DTrigger a Vertex AI Pipeline on a schedule or on a Pub/Sub event (e.g. new data landing in Cloud Storage) — with Cloud Build automating image builds
Answer & Solution
Correct answer: D. Trigger a Vertex AI Pipeline on a schedule or on a Pub/Sub event (e.g. new data landing in Cloud Storage) — with Cloud Build automating image builds
Pipeline triggers + Cloud Build is the canonical ML CI/CD pattern (per PMLE §5.2). The others aren't automation.
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