E-commerce platforms manage inventory in real-time through integrated inventory management systems. These systems provide visibility across stock levels, enabling automated tracking and updates. They sync with sales channels, allowing for immediate adjustments based on transactions, and can alert retailers to low stock levels or overstock situations. By employing technologies like RFID and barcode scanning, businesses can improve accuracy in inventory control. This streamlined process helps prevent stockouts and enhances customer satisfaction through timely order fulfillment.