Product differentiation is the set of attributes that make a product meaningfully distinct from competitors, allowing the company to compete on something other than price. It is one of the foundational concepts of competitive strategy, formalized in Michael Porter's 1980 book "Competitive Strategy," which named differentiation as one of three generic competitive strategies (alongside cost leadership and focus).
Differentiation typically falls into three categories. Vertical differentiation is objective quality: most customers would agree this product is better on a measurable dimension (faster, more reliable, more accurate). Horizontal differentiation is preference: customers reasonably disagree about which is better...