Describe what the product technically does, list the buyers who need to understand it, and it holds one core technical fact constant while translating it into value-prop copy for each — so the CFO and the engineer are hearing the same truth, in language each of them actually cares about.
States the one technical claim that has to stay true across every version.
A distinct headline and value prop per audience, in their vocabulary, not yours.
Names what could get lost or overclaimed in translation for each audience.