Amazon Inventory Management

Demand Forecasting

Moving average over 4-12 weeks. Add 10-20% for growth trends.

Safety Stock

= Daily avg sales × Lead time × Safety factor

Method	Factor
Ocean	1.5-2.0
Air	1.2-1.5

IPI Optimization

550+ excellent. Reduce excess, boost sell-through, fix stranded listings.

Turnover

Consumables 8-12x/year, standard 6-8x/year.

Liquidation

Gradual markdowns → Outlet → Transfer → Donate

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Data-driven restocking is the key.