Multi-Warehouse Inventory Overview Multi-warehouse inventory lets you stock products at multiple physical locations — warehouses, stores, 3PLs — and route each order to the location best positioned to fulfill it. Shopify and BigCommerce have multi-location inventory built in. WooCommerce needs a plugin. Only build a custom allocation engine if your routing logic (zone-based, cost-optimized, split fulfillment) exceeds what platform tools support. When to Use This Skill - When a merchant operates more than one warehouse, store, or 3PL (third-party logistics) provider - When shipping cost is sig…