PILLAR 7 · Core Operations
Inventory Management
Demand forecasting, safety stock, reorder points, seasonal planning, and multichannel inventory allocation.
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Demand Forecasting for Ecommerce: Methods for Small and Growing Sellers · How to Calculate Safety Stock
7.1 Forecasting & Planning
Demand Forecasting for Ecommerce: Methods for Small and Growing Sellers
Simple moving-average and seasonal-adjustment forecasting methods that don't require a data science background.
How to Calculate Safety Stock
The standard formula for buffering against demand and lead-time variability, worked through an example.
Reorder Points and Reorder Quantity, Explained
How reorder point (when to order) and reorder quantity (how much) work together, and how to set both.
Seasonal Inventory Planning
Building a peak-season inventory plan that accounts for supplier lead times well before the season starts.
Safety Stock & Reorder Point Calculator
Calculate the safety stock and reorder point that protects you from stockouts without overstocking.
7.2 Inventory Health & Allocation
Inventory Turnover: What It Is and What's a Healthy Number by Category
How to calculate inventory turnover and rough benchmark ranges by product category.
How to Prevent and Recover From Stockouts
What a stockout actually costs beyond the missed sale, and how to recover ranking after one.
Overstock and Aged Inventory: What to Do About It
Clearance strategies and how aged-inventory storage fees factor into the decision to discount versus hold.
Multichannel Inventory Allocation: How Much to Send to Each Channel
A framework for splitting limited inventory across channels based on channel-level contribution margin, not just sales velocity.
Distributed Inventory and Regional Warehousing, Explained
How regional fulfillment-center distribution affects delivery speed and storage cost.
7.3 Systems & Marketplace-Specific Requirements
Inventory Management Software: What to Look For and When You Need It
Signals that you've outgrown spreadsheet-based inventory tracking, and what to evaluate in a dedicated tool.
Marketplace Inventory Requirements and Restrictions
IPI-style inventory health scores and storage limits, compared across marketplaces.
Warehouse Management Basics for Growing Sellers
When to move beyond informal storage and adopt basic WMS practices.