Most connected TV incrementality tests fail before a single ad runs because the test produces a number that looks convincing without proving anything. Coming into this year cross-platform measurement ranked as a top priority for 72% of advertisers, up from 64% in 2025, according to the IAB’s 2026 Outlook Study.
Attribution focuses on identifying which advertising exposure deserves credit for a conversion. Incrementality asks whether that conversion would have happened without the ad.