Which CTV Platforms Support Incrementality Testing?

The major platforms for CTV advertising and incrementality testing span direct-buy platforms, DSPs, and publisher channels: Vibe.co, tvScientific, MNTN, Tatari, The Trade Desk, Amazon DSP, and Roku Ads. What separates them isn't whether they offer incrementality in some form — most do — it's where the results live. A holdout that runs natively inside Northbeam or Triple Whale, the same tools you use for Meta and Google, produces a number your team acts on alongside everything else. One that lives in a separate platform dashboard or requires a reconciliation step reaches the same conversation later, if at all.

Which CTV platforms offer incrementality testing?

The major CTV advertising platforms approach incrementality through three structures: native integration, third-party routing, and platform-managed reporting. Vibe integrates holdout testing natively through Northbeam and Haus. tvScientific routes testing through third-party measurement partners. MNTN runs its own holdout and reports results in its own dashboard. Tatari has built measurement as a core positioning, with geo holdout methodology drawn from its linear TV heritage.

For a deeper look at how each test type works, what incrementality means in CTV advertising covers audience holdouts, geo tests, and synthetic control in detail.

What's the difference between native and third-party incrementality testing?

Native incrementality means holdout setup, active suppression, and lift calculation run inside Northbeam, Triple Whale, or Haus — the same tools where you already track Meta and Google performance. Third-party incrementality means a separate measurement vendor (Measured, INCRMNTAL) handles the holdout and delivers results outside your attribution stack.

The practical difference is in what gets acted on. A lift number that appears next to your Meta ROAS inside Northbeam gets reviewed in the same conversation as every other channel metric, compared directly, and used to move budget. A lift number that lives in a separate report gets filed. Most teams know this intuitively — they haven't always mapped it to the platform selection question.

Platform-managed incrementality is a third variation: the platform that sold you the impressions runs the holdout and reports results in its own interface. The holdout methodology may be technically sound — a real control group is withheld, exposed vs. control conversions are measured — but the results don't flow into your existing measurement stack. For teams that evaluate all channel performance from a single Northbeam or Triple Whale dashboard, that's still a reconciliation step. Independently verified incrementality — run inside a third-party tool your team already audits — is structurally different from platform-reported incrementality, regardless of methodology.

Shinesty, an irreverent apparel brand, achieved 70% net-new customers on Vibe campaigns — measured via Klaviyo suppression and verified in Northbeam alongside every other paid channel.

How does Vibe handle incrementality testing?

On Vibe, audience holdout and synthetic control both run natively inside third-party tools, with no additional vendor relationship required. For audience holdout, Vibe actively suppresses the control group from ad delivery throughout the campaign — the holdout cell is configured in Northbeam or Triple Whale, and lift calculation runs inside that dashboard. For synthetic control, the Haus integration builds a weighted statistical counterfactual from pre-campaign data, which is particularly reliable for brands with high geographic variability or audience pools too small to generate statistically significant results from a geographic holdout.

Sijo Home, a DTC home textiles brand, cut new customer CAC by 57% compared to social — a Northbeam-verified result measured against a holdout cell running natively inside the attribution tool.

Vibe holds top ratings on G2 for ease of use and estimated ROI — see the Vibe awards page for the full list. For the full setup guide — holdout sizing, cooldown windows, and the Haus synthetic control workflow — how to set up CTV incrementality testing on Vibe covers each step.

How do other CTV platforms approach incrementality?

tvScientific

tvScientific uses third-party measurement validation for incrementality — the platform's own site describes it as "proprietary attribution and third-party validation" without naming specific partners; check tvScientific directly for current measurement setup. Pinterest acquired tvScientific in 2025, and the platform now operates as "tvScientific by Pinterest" with its targeting built on Pinterest's social interest graph — signals derived from saves, clicks, and engagement on Pinterest rather than identity data from CRM and purchase behavior. Incrementality results don't appear natively in Northbeam or Triple Whale. For a side-by-side breakdown on targeting and measurement, the Vibe vs. tvScientific comparison covers where the platforms diverge.

MNTN

MNTN has built-in incrementality testing: the platform automatically withholds 10% of targeted audiences as a control group before campaigns launch, then compares exposed vs. control conversion rates at month's end. MNTN connects to Northbeam and Triple Whale via API to sync campaign reporting data — spend, impressions, and clicks flow into your attribution dashboard. The incrementality holdout itself runs in MNTN's own system, and the results live in MNTN's Incrementality Dashboard, not inside Northbeam or Triple Whale. For teams that use Northbeam or Triple Whale to evaluate all channels in one view, MNTN's holdout results still require a separate step to surface there — which is what Vibe's native integration eliminates. For current MNTN capabilities and onboarding requirements, check MNTN directly.

Tatari

Tatari markets itself as a convergent TV platform — streaming, linear, and online video. Its measurement approach includes geo holdout methodology, drawing on its linear TV background. Tatari connects to Northbeam — confirm with both platforms what that integration covers and whether incrementality results are included, or whether it syncs campaign reporting data only. For brands in physical-location categories — retail, restaurants, automotive — where geographic lift is meaningful and trackable, Tatari's measurement approach is worth evaluating directly. For how agencies structure holdout testing across platforms, how agencies run CTV incrementality tests for clients covers the full setup.

The Trade Desk

The Trade Desk is a programmatic DSP, not a CTV-native direct-buying platform — campaigns run across a broad mix of inventory sources including CTV, bought through auction-based programmatic. Incrementality is configured through connected measurement partners; results appear in TTD's reporting interface or your connected measurement tool depending on setup. For teams that want CTV incrementality to appear natively in Northbeam or Triple Whale alongside their existing channels, Vibe's native integration skips the partner setup step. For current TTD incrementality options, check The Trade Desk or your agency directly.

Amazon DSP

Amazon DSP has its own measurement infrastructure for incrementality — results stay within Amazon's ecosystem and don't surface natively in Northbeam or Triple Whale. For brands with significant Amazon retail presence, Amazon's measurement covers purchase behavior within the Amazon ecosystem specifically. For teams evaluating CTV alongside Meta and Google in a single measurement tool, Vibe's holdout runs natively inside Northbeam or Triple Whale — no separate reporting workflow required. Check Amazon Ads directly for current measurement capabilities and setup.

Roku Ads / OneView

Roku's advertising platform includes Roku Ads Manager (self-serve, Roku-owned inventory) and OneView (their DSP, which also accesses third-party CTV inventory). Roku's measurement leverages ACR (automatic content recognition) data — exposure signals from Roku devices, which are unique to Roku's ecosystem. Roku has measurement partnerships with third-party vendors, but specific incrementality holdout methodology and where results surface varies by product and is not fully documented in public-facing materials. For teams running Northbeam or Triple Whale as their measurement stack, Vibe's native holdout integration surfaces CTV incrementality in the same dashboard as every other channel. For current Roku capabilities, check Roku directly.

What should you ask a CTV platform about incrementality before you buy?

Three questions separate platforms that build incrementality into how you manage budgets from platforms that produce incrementality as a deliverable you file:

On all three questions, Vibe is currently the only CTV buying platform where holdout setup, suppression, and lift calculation run natively inside Northbeam or Triple Whale — the same dashboard where you already review Meta and Google. That's the difference between a lift number your team acts on in the next budget conversation and one that gets filed in a separate report.

Search captures demand that already exists. Social reaches people through behavioral signals from their logged-in activity. TV reaches households upstream, before they're searching, before the social algorithm has found them. The platforms whose TV results appear in the same Northbeam or Triple Whale dashboard as Search and Social are the ones that function as a real third pillar. The platforms that require a separate reporting layer to justify their contribution stay as experiments.

For more on building the measurement infrastructure that makes incrementality actionable, how enterprise brands measure CTV incrementality covers iROAS calculation and how to present the numbers internally.

FAQ

Best CTV platforms with incrementality testing?

The major CTV platforms offering incrementality testing are Vibe, tvScientific, MNTN, and Tatari. Vibe is the only CTV platform with native Northbeam holdout testing, meaning setup, suppression, lift calculation, and results all run inside Northbeam or Haus alongside your Meta and Google data. tvScientific routes through third-party partners Measured and INCRMNTAL. MNTN runs its own holdout (automatically withholds 10% of targeted audiences) and reports results in its own Incrementality Dashboard — not natively in Northbeam or Triple Whale. Tatari offers geo holdout methodology rooted in linear TV measurement. The key evaluation question is not whether a platform offers incrementality — most do — but whether the result appears in your existing measurement stack or requires a separate reconciliation step.

What is native CTV incrementality testing?

Native incrementality means holdout setup, active suppression, and lift calculation run inside the measurement tool you already use — Northbeam, Triple Whale, or Haus — rather than in the CTV platform's own interface or through a separately contracted measurement vendor. The practical difference is that a native result appears next to Meta and Google data in the same dashboard, where it can be directly compared and acted on without pulling a separate report or reconciling numbers across systems.

Does MNTN offer incrementality testing?

MNTN runs built-in incrementality testing: the platform automatically withholds 10% of targeted audiences as a control group before campaigns launch, compares exposed vs. control conversion rates monthly, and reports results in MNTN's own Incrementality Dashboard. MNTN connects to Northbeam and Triple Whale via API to sync campaign reporting data (spend, impressions, clicks), but the holdout itself runs in MNTN's system and results don't surface inside those tools. For teams that evaluate all paid channels from a single Northbeam or Triple Whale dashboard, that's still a separate step. Check MNTN directly for current capabilities.

What CTV platforms integrate with Northbeam for incrementality?

Vibe is the only CTV platform where holdout cell setup, active suppression, and lift calculation run natively inside Northbeam — results appear in the same dashboard as Meta and Google attribution, without a separate reconciliation step. Other CTV platforms, including MNTN and Tatari, connect to Northbeam to sync campaign reporting data, but their incrementality holdouts run in their own systems and results don't surface inside Northbeam. Vibe also integrates with Triple Whale and Haus for incrementality.

How long does a CTV incrementality test take on Vibe?

Most holdout tests on Vibe run four to six weeks to accumulate enough conversion events in the control group for statistical reliability. Four weeks is the standard floor for most consumer DTC campaigns; for high-consideration categories with longer purchase cycles (home improvement, automotive, subscription services), six to eight weeks is more appropriate. Vibe's Haus integration uses synthetic control methodology, which can reach reliable results faster for brands with smaller audience pools or high geographic variability. For full setup guidance, how to structure a CTV incrementality test covers holdout sizing and cooldown windows in detail.