Differentiation is what makes a product or service stand out from competitors. It is the reason a customer chooses one option over another when the price is similar. A company can differentiate on quality, design, customer service, brand image, features, or any combination of these. The key is that the difference must matter to the customer and be hard for competitors to copy.

Michael Porter described differentiation as one of two broad competitive strategies, alongside cost leadership. A differentiator competes on uniqueness, not price. Apple differentiates on design and ecosystem. BMW differentiates on performance. Starbucks differentiates on the experience of the coffee shop, not just the coffee itself.

Differentiation is not the same as being different for its own sake. A feature that customers do not value is not a differentiator. It is a cost. True differentiation is customer-centric. It solves a problem, fulfills a desire, or creates an experience that people are willing to pay for. And it must be defensible. If a competitor can copy it next quarter, it is not a strategy.