When marketplaces, storefronts, warehouses, and finance systems operate from different numbers, inventory errors and slow reconciliation can quietly erode margins. Key HighlightsAmazon FBA, FBM, and Shopify create different operational requirements that can be difficult to manage through spreadsheets and manual exports. Inventory distortion from stockouts and overstock creates significant costs for retailers. Amazon and Shopify sellers need timely inventory and order synchronization to reduce overselling, reconciliation issues, and fulfillment problems. Dynamics 365 BC can provide a centralized operational foundation for connecting marketplace and e-commerce activity with back-office processes.