CTV Attribution Is Broken.
Here's What to Do Instead.

March 30, 2026 · 3 min read

If someone tells you they can give you last-click attribution on CTV, they're either confused or selling you something.

CTV doesn't work like search or social. There's no click. There's no cookie. The viewer is on a TV screen and the conversion happens on a phone or laptop. That gap — between exposure and action — is the central challenge of CTV measurement, and most brands aren't set up to handle it.

The standard approach is to look at "view-through" conversions: someone saw a CTV ad and later converted on another device. The problem is that view-through windows are generous (often 7–30 days), and if someone was already in your funnel, CTV gets credit it didn't earn.

Here's what actually works:

• Incrementality testing. Run CTV in one market, hold it out in a matched market, and compare the difference. It's not perfect, but it's the closest thing to a controlled experiment in real-world advertising. It answers the only question that matters: did CTV cause net new outcomes?
• Brand lift studies. Survey-based measurement from providers like Lucid or Kantar. These tell you whether people who saw your CTV ad have higher awareness, consideration, or purchase intent versus those who didn't. Not flashy, but directionally useful.
• Media mix modeling (MMM). If you're spending across multiple channels, MMM helps you understand how CTV contributes relative to everything else. It requires time and data, but for brands spending $500K+ USD on media, it's worth the investment.

The common thread: none of these rely on click-level tracking. They all accept that CTV measurement is closer to traditional TV measurement than to digital performance marketing. And that's okay. The brands that understand this are the ones building sustainable CTV strategies instead of chasing phantom ROAS numbers.

Measure what CTV actually does, not what your dashboard pretends it does.

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