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What Is a Functional Specification (Funktionale Leistungsbeschreibung, Germany)?
This is a German procurement term. A specification setting out the desired result rather than the specific solution.
What is a funktionale Leistungsbeschreibung?
A specification that describes the purpose, function and result required, and leaves the technical solution to the bidder.
When is it used?
When the buyer wants to draw on the market's expertise, or when several technical approaches could meet the need. It is common in IT and in design-and-build works.
What should a bidder provide?
A solution and a demonstration of how it achieves the required function, with evidence. Bids are compared on how well they deliver the outcome, so the explanation matters as much as the solution.
