Abstract: The present invention is directed to a real-time logistics and fulfillment system for orders placed on-line that incorporates a real-time closed-loop communication engine to each of a plurality of merchants, having an auto-archive and resubmission capabilities, which provides guaranteed message delivery and response over a communication network. The present invention incorporates a process handler programmed to receive logistical and fulfillment information on an item offered by a merchant from a vendor in real-time upon submission of an order for the item by a customer, and to return the logistical and fulfillment information to the merchant in real-time.