Increasingly researchers are advocating the need of integration between the demand and supply value chains. The motive behind it is the creation of supply chains capable of delivering superior value propositions to each type of customer served by the company. While the concept of demand-supply integration is relatively new, many researchers have studied the interface between internal departments or functions and explored how they can align their efforts. We therefore conducted a systemic literature review of the papers that studied the interface between at least one demand-oriented and one supply-oriented function. The focus was to understand how the knowledge of inter-functional interaction management could be used to understand the main managerial challenges in the integration of supply and demand value chains. The analysis of 76 papers showed that interdepartmental integration has two main dimensions: cooperation and collaboration. We also identified the factors that drive functions to work together, how this can be achieved and the conditions that make its implementation smoother. These findings were then used to expand the idea of demand-supply integration and grounded reflections on the concept from both a marketing and an operations management perspective. This research could interest researchers and practitioners willing to adopt such strategy.