Warehouse execution system, devices, and method

An automated system for use in a distribution center, comprising:

• a) a control entity including a data processor for receiving a customer order via data communication over a data network, the customer order identifying a plurality of different products being ordered,
• b) a packing cell configured to receive a plurality of master cases, each master case of the plurality of master cases holding a plurality of identical products, wherein the packing cell includes a robotic arm, wherein in response to instructions received from the control entity, the robotic arm is configured to pick and remove one or more products corresponding to the customer order from a relevant master case of the plurality of master cases and place into a shipping case, and
• c) a plurality of autonomous mobile robots, wherein in response to instructions received from the control entity, selected autonomous mobile robots of the plurality of autonomous mobile robots are configured to navigate in the distribution center to bring a respective master case to the packing cell, or to position in proximity to the packing cell to receive in the shipping case the one or more products picked by the robotic arm.