The Five Competitive Forces That Shape Strategy

Michael E. Porter

Article | Harvard Business Review | January 2008

The Five Competitive Forces That Shape Strategy

Abstract

This article includes a one-page preview that quickly summarizes the key ideas and provides an overview of how the concepts work in practice along with suggestions for further reading. In 1979, a young associate professor at Harvard Business School published his first article for HBR, "How Competitive Forces Shape Strategy." In the years that followed, Michael Porter's explication of the five forces that determine the long-run profitability of any industry has shaped a generation of academic research and business practice. In this article, Porter undertakes a thorough reaffirmation and extension of his classic work of strategy formulation, which includes substantial new sections showing how to put the five forces analysis into practice. The five forces govern the profit structure of an industry by determining how the economic value it creates is apportioned. That value may be drained away through the rivalry among existing competitors, of course, but it can also be bargained away through the power of suppliers or the power of customers or be constrained by the threat of new entrants or the threat of substitutes. Strategy can be viewed as building defenses against the competitive forces or as finding a position in an industry where the forces are weaker. Changes in the strength of the forces signal changes in the competitive landscape critical to ongoing strategy formulation. In exploring the implications of the five forces framework, Porter explains why a fast-growing industry is not always a profitable one, how eliminating today's competitors through mergers and acquisitions can reduce an industry's profit potential, how government policies play a role by changing the relative strength of the forces, and how to use the forces to understand complements. He then shows how a company can influence the key forces in its industry to create a more favorable structure for itself or to expand the pie altogether. The five forces reveal why industry profitability is what it is. Only by understanding them can a company incorporate industry conditions into strategy.

Keywords: Profit; Five Forces Framework; Industry Growth; Industry Structures; Business and Government Relations; Competitive Strategy;

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Citation:

Porter, Michael E. "The Five Competitive Forces That Shape Strategy." Special Issue on HBS Centennial. Harvard Business Review 86, no. 1 (January 2008): 78–93.

Article | Health Affairs

Navy Medicine Introduces Value-Based Health Care

Alee Hernandez, Robert S. Kaplan, Mary L. Witkowski, C. Forrest Faison III and Michael E. Porter

In 2016 the newly appointed surgeon general of the Navy launched a value-based health care pilot project at Naval Hospital Jacksonville to explore whether multidisciplinary care teams (known as integrated practice units, or IPUs) and measurement of outcomes could improve the readiness of active duty personnel and lower the cost of delivering care to them, their dependents, and local retirees. This article describes the formation of the project’s leadership structure; the selection of four conditions to be treated (low back pain, osteoarthritis, diabetes, and high-risk pregnancy); the creation of the care team for each condition; outcomes and costs measured; and the near-term changes in outcomes during the twelve-month pilot period. Patient outcomes improved for three of the four conditions. We describe factors that contributed to the project’s success. After the pilot concluded, the Navy combined the back pain and osteoarthritis IPUs into a single musculoskeletal clinical unit and established a similar IPU at another naval hospital and its clinics. The diabetes IPU was continued, but the high-risk pregnancy IPU was not. We offer several observations on the elements that were key to the success of the project, explore challenges and opportunities, and suggest that the pilot described here could be taken to greater scale in the Military Health System and elsewhere.

Keywords: military health system; Health Care and Treatment; Cost Management; Projects;

Citation:

Hernandez, Alee, Robert S. Kaplan, Mary L. Witkowski, C. Forrest Faison III, and Michael E. Porter. "Navy Medicine Introduces Value-Based Health Care." Health Affairs 38, no. 8 (August 2019): 1393–1400. View Details

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As the largest company, by revenue, in the world, Walmart has been a lightning rod for criticism. However, in an attempt to stay ahead of traditional and digital retailers, and keep customers satisfied with evolving demands, the company is strengthening its competitive advantage by creating Shared Value. Current CEO, Doug McMillon outlines his strategy for fending off competition, navigating a challenging retail landscape, and positioning Walmart as a leading retailer for today and the future.

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