Every design decision has the potential to include or exclude customers. Inclusive design emphasizes the contribution that understanding user diversity makes to informing these decisions, and thus to including as many people as possible. User diversity covers variation in capabilities, needs and aspirations.
This site first presents an example set of ‘Product performance indicators’, i.e. things that should be considered when thinking about how well a product or service is performing. It discusses how users’ needs fit into this set. It then explains how delivering breakthrough advances across the whole set of performance indicators requires understanding diversity within the population and responding to this diversity through Inclusive design. Comparisons with ‘Design for all’ and ‘Universal design’ are also presented
Source: What is inclusive design?