Mass Customization
The process of delivering wide-market goods and services that are customized to satisfy a specific customer need.
Investopedia Commentary
Basically, this combines the best of "custom-made" and "mass produced" goods. Computer purveyor Dell and many auto makers are good examples of companies providing mass customization.
Related Links
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See also: Demand, Dog Eat Dog, Economics, Market, Monopolistic Competition, Perfect Competition