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How often should the customer retrain their model, and what has to be true before you automate it?

"It depends" is correct and unhelpful. The decay-curve method that replaces guesswork with measurement, trigger-based vs scheduled retraining, and the safety rails without which auto-retraining is an outage generator.

Updated Aug 2026 · Grounded in real Forward Deployed Engineer interview loops and written to a senior-engineer editorial bar.

"It depends" is correct and unhelpful. The decay-curve method that replaces guesswork with measurement, trigger-based vs scheduled retraining, and the safety rails without which auto-retraining is an outage generator.

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