A Smoke Test measures demand for a product or feature before it is built. The principle: instead of asking people whether they would buy something, one observes whether they actually click, sign up, or order. The discrepancy between stated intention and real behavior is considerable — a Smoke Test bypasses it.
The most common format is a landing page that describes a product that does not yet exist. The call-to-action — such as a buy button or registration form — measures real interest. A team is planning, for example, a subscription service for office snacks. Instead of spending months building delivery logistics, a page goes live with an offering description and prices. After two weeks, the conversion rate shows whether sufficient demand exists. If it is at 0.1 percent, the team saves months of development work. If it is at five percent, the next step is worthwhile. Important: users who click the button receive a transparent message that the product is still in development.
The term originally comes from hardware testing, where a smoke test checks whether a device smokes when switched on. In product development, it checks whether an idea survives contact with reality.
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