Can demand profiles change over time?

Yes. Demand profiles evolve due to seasonality, promotions, product life cycles, and market conditions. This is why static classifications quickly become obsolete in volatile environments. An SKU that behaved as fast-moving last year may have shifted into a more intermittent pattern, and continuing to treat it the same way leads to either excess stock or recurring shortages. Continuous reclassification, driven by recent demand data, keeps planning parameters aligned with reality. Probabilistic models help here by quantifying the demand variability per SKU period directly, so the buffer adapts to the current profile without requiring planners to reclassify thousands of items manually each cycle.