Your ERP says 144 units. Your WMS says 137. Your Shopify store sold 6 yesterday and the order hasn't hit your system yet. Which number do you pick when a customer calls asking if something is in stock? Most teams just... pick one and hope. That's not a process, that's a prayer. The fantasy of a "unified inventory view" sounds simple. One number, everywhere, always current. The reality is that your ERP was built to manage financial transactions, your WMS was built to move prod