Secondary research establishes the analytical landscape: what published market reports, transaction databases, and sector benchmarks show about the size, structure, and competitive dynamics of the market. Primary research tests whether that landscape reflects how the market is actually moving: expert interviews, channel checks, and field research that surfaces the pricing dynamics, customer acquisition patterns, and competitive behaviour that do not appear in published data. The two work together because secondary data tells you what the market looks like on paper, and primary intelligence tells you which parts of that picture to trust and which to revise before the model's assumptions are set.