IV. Fit Drives Both Competitive Advantage and Sustainability Positioning choices determine not only which activities a company will perform and how it will configure individual activities but also how activities relate to one another. While operational effectiveness is about achieving excellence in individual activities, or functions, strategy is about combining activities. Southwest’s rapid gate turnaround, which allows frequent departures and greater use of aircraft, is essential to its high-convenience, low-cost positioning. But how does Southwest achieve it? Part of the answer lies in the company’s well-paid gate and ground crews, whose productivity in turnarounds is enhanced by flexible union rules. But the bigger part of the answer lies in how Southwest performs other activities. With no meals, no seat assignment, and no interline baggage transfers, Southwest avoids having to perform activities that slow down other airlines. It selects airports and routes to avoid congestion that introduces delays. Southwest’s strict limits on the type and length of routes make standardized aircraft possible: every aircraft Southwest turns is a Boeing 737. What is Southwest’s core competence? Its key success factors? The correct answer is that everything matters. Southwest’s strategy involves a whole system of activities, not a collection of parts. Its competitive advantage comes from the way its activities fit and reinforce one another. Fit locks out imitators by creating a chain that is as strong as its strongest link. As in most companies with good strategies, Southwest’s activities complement one another in ways that create real economic value. One activity’s cost, for example, is lowered because of the way other activities are performed. Similarly, one activity’s value to customers can be enhanced by a company’s other activities. That is the way strategic fit creates competitive advantage and superior profitability. Types of Fit The importance of fit among functional policies is one of the oldest ideas in strategy. Gradually, however, it has been supplanted on the management agenda. Rather than seeing the company as a whole, managers have turned to “core” competencies, “critical” resources, and “key” success factors. In fact, fit is a far more central component of competitive advantage than most realize. Fit is important because discrete activities often affect one another. A sophisticated sales force, for example, confers a greater advantage when the company’s product embodies premium technology and its marketing approach emphasizes customer assistance and support. A production line with high levels of model variety is more valuable when combined with an inventory and order processing system that minimizes the need for stocking finished goods, a sales process equipped to explain and encourage customization, and an advertising theme that stresses the benefits of product variations that meet a customer’s special needs. Such complementarities are pervasive in strategy. Although some