BUSI 613 Week 2 Journal Article Review 2 Example

Journal Article Review: Frohlich and Westbrook on the Arcs of Supply Chain Integration

The Article and Its Question

Frohlich and Westbrook (2001) asked a question at the heart of supply chain management: how far should a manufacturer integrate its activities with those of its suppliers and customers, and does greater integration pay off? By 2001, managers had been told for years that integration was the key to supply chain performance, but there was little evidence about how much integration firms actually practiced or whether more was better. The authors set out to describe the patterns of integration among manufacturers and to test their association with performance.

Summary of the Study

The authors drew on an international survey of manufacturing plants that asked managers about the extent of their integration with suppliers and customers. Integration was measured through activities such as sharing production plans, joint access to planning systems, knowledge of inventory levels, packaging customization, delivery frequency and common logistics equipment. Using these measures, they classified firms by the extent of integration in each direction and identified five patterns, which they called arcs of integration.

Inward-facing firms had little integration with either suppliers or customers. Periphery-facing firms had some integration in both directions, but only at a modest level. Supplier-facing firms were strongly integrated with suppliers but not customers, and customer-facing firms the reverse. Outward-facing firms, the smallest group, were strongly integrated in both directions, forming the widest arc.

The central finding was that the width of the arc was associated with performance improvement. Outward-facing firms reported the largest improvements across a range of measures, including delivery, quality, productivity and market share. Inward-facing and periphery-facing firms reported the smallest improvements. Firms integrated in only one direction fell in between. Interestingly, the authors also found that the type of integration varied: some firms integrated mainly through information, such as shared plans and inventory data, while others integrated mainly through physical logistics, such as common equipment and frequent deliveries. The widest arcs combined both. The authors concluded that integration should extend broadly upstream and downstream and that firms with the widest arcs gained the most.

Analysis and Evaluation

The article's strengths are its international sample and its clear typology. Rather than treating integration as a single dimension, it distinguished direction and degree, which gave managers a vocabulary for describing where their companies stood. The finding that relatively few firms were outward-facing, despite the rhetoric of integration, was itself valuable, since it suggested a large gap between management advice and practice. That gap remains relevant today, as many companies describe close partnerships with suppliers and customers while sharing little information with them in practice.

The study's central limitation is that it shows association, not cause. Firms that integrated widely may have been better managed in other respects, and those other qualities could explain their performance. The measures of performance improvement were reported by the same managers who reported integration, which raises the possibility of common method bias: managers who believe in integration may also rate their performance more favorably. The study also offers little guidance on the costs of integration, such as shared systems and the loss of flexibility to switch partners. A firm deeply integrated with one supplier may find it difficult and expensive to change when that supplier's prices rise or quality falls, and the survey could not capture firms that had integrated, suffered from that dependence and pulled back. Because the data were collected at one point in time, the study also cannot show whether integration preceded performance gains or followed them, since successful firms may have had more resources to invest in integration.

Later research refined the article's conclusions. Flynn et al. (2010) studied manufacturers in China and examined supplier, customer and internal integration separately. They found that customer integration and internal integration, the coordination of functions within the firm, were more strongly associated with operational and business performance than supplier integration, and that firms with balanced, high levels of all three performed best. Their findings suggest that the direction of integration matters and that internal integration may be a prerequisite for effective external integration, a point that Frohlich and Westbrook's typology did not address. Lee et al. (1997) had earlier shown how poor information flow between partners amplifies demand variability, which supports the logic that integration through shared information improves performance.

Connection to the Course Textbook

The article connects to the course text's chapters on supply chain coordination and partnerships, which describe integration as the alignment of planning, information and logistics among supply chain members. The textbook's discussion of the benefits of sharing information, coordinating production plans and building long-term relationships with key partners corresponds to the activities Frohlich and Westbrook measured. Their arcs also illustrate the textbook's point that integration is a strategic choice: firms decide how far to integrate with which partners, and those choices shape the supply chain's performance.

Application to Practice

Consider a composite furniture manufacturer in Indiana that sells through regional retailers and buys wood, hardware and fabric from about 40 suppliers. The company is supplier-facing: it shares forecasts and production schedules with its main lumber and fabric suppliers, but its retailers place orders by email with little advance notice, and the company has no visibility into their inventory or sales.

Frohlich and Westbrook's findings suggest that the company would benefit from widening its arc toward customers. Practical steps would include asking its largest retailers to share weekly sales and inventory data, agreeing on a collaborative forecast for seasonal promotions and coordinating deliveries to reduce retailers' stockouts. In line with Flynn et al. (2010), the company should also examine its internal integration: if sales, production planning and purchasing do not share a single plan, customer data will not translate into better schedules. A cross-functional planning meeting each week, using the retailers' data, would make the external integration effective. The company should begin with two or three large retailers and expand as the benefits become clear, since integration requires investment and trust on both sides. It should also track measures that would show whether the effort pays off, such as forecast accuracy, retailer stockouts and finished-goods inventory, so that it can judge the results rather than assuming that integration is always worthwhile.

Conclusion

Frohlich and Westbrook (2001) offered a useful framework for describing supply chain integration and evidence that the widest integration is associated with the greatest performance gains. Although its survey design cannot prove that integration causes better performance, and later research suggests customer and internal integration deserve particular emphasis, the arcs of integration remain a practical tool for managers deciding how far and in which directions to integrate.

References

Flynn, B. B., Huo, B., & Zhao, X. (2010). The impact of supply chain integration on performance: A contingency and configuration approach. Journal of Operations Management, 28(1), 58-71. https://doi.org/10.1016/j.jom.2009.06.001

Frohlich, M. T., & Westbrook, R. (2001). Arcs of integration: An international study of supply chain strategies. Journal of Operations Management, 19(2), 185-200. https://doi.org/10.1016/S0272-6963(00)00055-3

Lee, H. L., Padmanabhan, V., & Whang, S. (1997). Information distortion in a supply chain: The bullwhip effect. Management Science, 43(4), 546-558. https://doi.org/10.1287/mnsc.43.4.546