Systems and methods for improved liquid dispensing system communications are disclosed. In an example method for communicating control data between a plurality of component of a liquid dispensing system, a controller of a first component of a liquid dispensing system publishes a control data message to a composite controller associated with the plurality of component. Based on a classification of the control data message, a second component is determined to be a subscriber for the control data message. The composite controller then transmits the control data message to a controller of the second component.