Where two organisations at different levels of the supply chain share responsibilities, resources, and performance information to serve similar end…

The question describes a partnership between two organizations operating at different stages of the same supply chain, such as a supplier and a buyer or a manufacturer and a distributor. This type of upstream and downstream relationship, characterized by the sharing of resources, information, and responsibilities to serve a common end-customer, is the definition of vertical collaboration. It aims to create a more seamless and efficient flow of goods and information through the supply chain, reducing inefficiencies like the bullwhip effect and improving overall responsiveness.

B. Horizontal collaboration occurs between firms at the same level in the supply chain, often competitors, to achieve mutual benefits (e.g., shared logistics).

C. This describes the intensity of a collaborative relationship (i.e., highly integrated), not the structural type based on supply chain position.

D. This describes a low-intensity collaboration. The sharing of responsibilities and resources as described suggests a relationship that is more than 'loose'.

1. Christopher, M. (2016). Logistics & Supply Chain Management (5th ed.). Pearson. In Chapter 4, Section 'Managing the supply chain as a network', Christopher distinguishes between vertical relationships (between firms at different levels) and horizontal relationships (between firms at the same level). He notes vertical collaboration is key to creating a seamless pipeline. (p. 112).

2. Simatupang, T. M., & Sridharan, R. (2005). The collaboration index: a measure for supply chain collaboration. International Journal of Physical Distribution & Logistics Management, 35(1), 44-62. The authors define vertical collaboration as "collaboration between a firm and its upstream suppliers and downstream customers" (p. 46, para. 2). This directly aligns with the scenario of organizations at "different levels of the supply chain." DOI: https://doi.org/10.1108/09600030510577421

3. Fawcett, S. E., Magnan, G. M., & McCarter, M. W. (2008). A three-stage implementation model for supply chain collaboration. Journal of Business Logistics, 29(1), 93-112. The paper explicitly states, "Vertical collaboration links firms in the supply chain from initial supplier to ultimate customer... Horizontal collaboration refers to buyer-buyer or seller-seller relationships" (p. 96, para. 3). This clearly separates the two concepts. DOI: https://doi.org/10.1002/j.2158-1592.2008.tb00070.x