Porter's five forces
Definition
A competitive industry analysis framework developed by Michael Porter that evaluates the attractiveness and profitability of an industry by assessing five structural forces: competitive rivalry, threat of new entrants, threat of substitutes, bargaining power of buyers, and bargaining power of suppliers.
Michael Porter introduced the five forces framework in his 1979 Harvard Business Review article and expanded it in Competitive Strategy (1980). It remains the dominant framework for industry-level competitive analysis because it looks beyond direct competitors to the full set of forces that determine profitability.
The five forces:
- Competitive rivalry: How intense is competition among existing players? High rivalry (many competitors, low differentiation, high fixed costs) drives down margins.
- Threat of new entrants: How easy is it for new competitors to enter the market? Strong barriers to entry (capital intensity, brand loyalty, regulatory requirements) protect incumbents.
- Threat of substitutes: Can buyers meet the same need with a different product or service? High substitution risk limits pricing power.
- Bargaining power of buyers: Can customers negotiate prices down or demand better terms? Concentrated buyers with switching options have significant power.
- Bargaining power of suppliers: Can suppliers charge more or reduce quality? Concentrated suppliers with few alternatives have leverage.
How to use it: Assess each force as high, medium, or low for your industry. The weaker the forces, the higher the potential profitability. Strategy is then about choosing a position that mitigates the strongest forces or leverages them against competitors.
On a whiteboard: Five forces is drawn as a hub-and-spoke diagram — industry at the center, one spoke per force. Teams annotate each spoke with specific actors and strength ratings. Snap it with BoardSnap to capture the competitive map before the session ends.
Examples
- A startup uses five forces analysis before entering the SaaS project management market and discovers the threat of substitutes is extremely high — dozens of entrenched competitors and low switching costs.
- An MBA student uses Porter's five forces to analyze the airline industry for a business school case — identifying why structural forces make it a low-margin business despite high revenue.
- A consulting team maps the five forces for a client's industry on a whiteboard at the start of a strategic planning engagement.
- A product manager uses five forces to frame a competitive strategy presentation to the board, explaining why building a switching-cost moat is the right long-term play.
Snap a porter's five forces. Ship its actions.
BoardSnap turns any whiteboard — including this one — into a summary and action plan.