The present invention relates to a way to provide computing and communication infrastructure to support full duplex quality of service for urgent and actionable structured communications securely transacted over a many-to-many managed network of intermittent ad hoc nodes. The invention overcomes technical challenges associated with high-volume, short-latency, semi-custom mobile order fulfillment by ensuring communications between customer and merchant are structured, robust, reliable and delivered via a duplex link. The described embodiments are advantageous in that they provide a bidirectional channel to facilitate discussion, confirmation and post-order communication. Moreover, the present invention is scalable to a many-to-many node ad-hoc network.