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Forecast Demand for FMCG

HardSystem Design00:00
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Your question is Forecast Demand for FMCG. Take a moment with it on the right.

Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).

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Problem

How would you build demand forecasting for an FMCG company?

Asked in the L2 stage. Treat this as a practical system design task. Explain how you would clarify requirements, collect and validate data, choose forecasting models, serve forecasts, evaluate accuracy, and monitor drift and operational failures. Address batch versus online inference, cold-start products, promotions, stockouts, hierarchical forecasts, and retraining. State which assumptions you would need to confirm rather than inventing company-specific scale or business metrics.