Strategic Group Mapping
Identify clusters of firms with similar strategies to find your competitive neighborhood
Not all firms in an industry compete in the same way. Strategic Group Mapping identifies clusters of firms within an industry that are following similar strategies along key dimensions such as specialization, brand identification, channel selection, product quality, vertical integration, cost position, service level, pricing, and geographic scope. Firms within the same strategic group tend to resemble one another and compete most directly with each other.
The key analytical insight is the concept of 'mobility barriers'—structural factors that make it costly for firms to move from one strategic group to another. These barriers explain why some groups consistently earn higher returns than others and why the profitability gap persists. Just as entry barriers protect an industry from outside entrants, mobility barriers protect strategic groups from repositioning by firms in other groups.
The framework also reveals that a firm's profitability depends on three factors: the overall industry structure (five forces), the structural position of its strategic group within the industry, and the firm's own position within its strategic group. This three-level analysis provides a much richer understanding of why firms in the same industry earn very different returns.
- Firms in the same industry can pursue fundamentally different strategies, and those pursuing similar strategies form strategic groups
- Mobility barriers between groups explain persistent profitability differences within the same industry
- The most intense competition occurs within strategic groups, not between them
- A firm's profitability is determined by industry-wide forces, its group's structural position, and its own position within the group
- Shifting between strategic groups requires overcoming mobility barriers that may be as formidable as entry barriers
- Identify the key strategic dimensionsDetermine the most important dimensions along which firms in the industry differ in their competitive approaches. Common dimensions include specialization, brand identification, push vs. pull marketing, channel choice, product quality, vertical integration, cost position, service, pricing policy, leverage, and relationship to parent company.Pro tipChoose dimensions that represent the most consequential strategic differences—those that create real mobility barriers between groups, not superficial operational differences.
- Plot firms on a strategic group mapSelect the two most important strategic dimensions as axes and plot each firm in the industry according to its position on those dimensions. Firms that cluster together form a strategic group. You may need to create multiple maps with different dimension pairs to capture the full picture.Pro tipMake the circle size proportional to each group's collective market share to visualize the industry's competitive distribution.
- Analyze mobility barriers between groupsFor each strategic group, identify the barriers that would make it costly for firms from other groups to adopt a similar strategy. These may include economies of scale, brand reputation, proprietary technology, distribution channel relationships, capital requirements, or experience effects specific to that strategic approach.
- Assess each group's vulnerability to the five forcesDifferent strategic groups face different exposure to each competitive force. Analyze how the five forces affect each group differently. A group of undifferentiated commodity producers faces more buyer power than a group of branded differentiators in the same industry.
- Draw strategic implicationsUse the map to identify the most attractive strategic positions, evaluate the feasibility and cost of repositioning your firm, predict which competitors will respond to your moves (those in your group), and anticipate industry evolution that might erode or strengthen different group positions.Pro tipThe most profitable repositioning moves are those that take you to a better-protected group while facing the weakest mobility barriers, or that create an entirely new group position.
Porter maps the chain saw industry along dimensions of brand identification, product quality/technology, and channel strategy. Professional-grade manufacturers like Stihl formed one group with dealer distribution and high brand loyalty. Mass-market brands like McCulloch formed another group selling through hardware stores and mass merchandisers. Private-label producers formed a third group competing purely on price.
Porter observed that standard industry analysis treated all firms within an industry as essentially similar, differing only in size or efficiency. But in practice, industries contained firms pursuing dramatically different strategies—some broad-line, some focused; some vertically integrated, some assembled; some brand-driven, some price-driven. Lumping them together obscured critical competitive dynamics.
The strategic group concept resolved this by creating an intermediate level of analysis between the industry and the individual firm. It explained puzzling phenomena like why large market share did not always lead to high profitability, and why certain competitive moves triggered fierce retaliation while others were tolerated.