Definition
Porter’s framework proposes three pure competitive positions: Cost Leadership (lowest cost at acceptable quality), Differentiation (unique value customers will pay for), and Focus (cost or differentiation within a narrow segment).

Introduction
A firm wins when its activity system supports a clear value proposition customers recognize and rivals struggle to copy. Straddling positions without trade-offs causes “stuck-in-the-middle” mediocrity.

Explanation

Cost Leadership

Drivers: scale, learning, process design, asset turns, procurement power, automation.

Promise: lower price for similar value → volume flywheel → more scale.

Differentiation

Drivers: design, performance, reliability, brand, service, ecosystem complements.

Promise: price premium and loyalty → higher margins.

Focus

Narrow segment (geography, use case, demographic).

Drivers: intimate segment knowledge, tailored features, targeted channels.

Trade-offs

Activities that make you great at one often raise costs or reduce flexibility for others; these trade-offs protect the position.

Execution

Align operations, metrics, incentives with the chosen position; prune contradictions.

Key Takeaways

Pick and commit; make trade-offs visible.

Build an activity system that reinforces the position.

Avoid mixing signals to customers and staff.

Real-World Case
Southwest Airlines (Cost Leadership): single aircraft type, quick turnarounds, point-to-point routes, no frills—activities that reinforce low cost and reliable, low fares.