Observed Signal · May 4, 2026 · Panel Discussion · Source: Adweek · Impact: 2/5 · Sentiment: Positive
Marketers Seek Clean Incrementality Measurements
An ADWEEK House panel co-hosted with Fetch examined the challenges brands face when measuring incremental impact from marketing. Panelists from CAVA, Nestlé, The Hershey Company, Haleon, Digitas and Fetch emphasized that incrementality is contested because consumer behavior is fragmented, teams often claim the same outcomes, and measurement signals from partners can conflict. Speakers argued randomized controlled trials remain the most reliable method but require discipline and time (brands may need six to eight months to see impact). Melissa Berger noted only about 8% of brands have formal incrementality programs. The discussion stressed the need for honest communication between brands and partners, careful experimental design, aligned timelines and realistic expectations about what measurement can prove.
Incrementality measurement affects how brands allocate media budgets and validate campaign effectiveness; the discussion highlights practical measurement constraints (RCTs, timelines, partner alignment) but does not announce major platform or policy changes.
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Key Takeaways & Evidence Grounding
- ADWEEK House hosted a group chat on incrementality co-hosted with Fetch.
- Melissa Berger (Digitas) said only 8% of brands have a formal incrementality program.
- Geoff Matthews (Fetch) stated randomized control trials are the most reliable way to isolate marketing impact.
- Sandra Abla (CAVA) said brands often need six to eight months to determine whether marketing drives impact.
- Panelists included representatives from Fetch, CAVA, Nestlé, The Hershey Company, Digitas, Haleon and ADWEEK.
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Major Brands Complain About Broken Measurement
At ADWEEK House during the Possible conference in Miami, marketers from Nestlé, Haleon, Molson Coors and CAVA discussed persistent problems with measuring advertising effectiveness. Speakers highlighted long‑standing gaps in incrementality measurement, difficulties verifying CTV placements, and the broader fragmentation of the ad ecosystem that undermines attribution. Panelists said AI can accelerate insight generation and should prompt renewed focus on solving incrementality, but cautioned that programmatic CTV buys often drift toward the most scalable inventory unless humans actively oversee algorithms. The sessions framed measurement failures as an operational pain point for brand marketers trying to explain return on ad spend and keep campaign plans on track.
Brands Ignore Measurement; Incrementality Solves Attribution
Trevor Testwuide, CEO and co-founder of Measured, published a sponsored op-ed arguing that modern platform-reported attribution (last-touch and platform claims) systematically misallocates marketing budgets. The piece recommends incrementality testing—using exposed vs. matched control groups (holdout tests)—to measure true causal lift and avoid paying repeatedly for demand a brand already had. It notes that retail media networks, social commerce, AI-driven discovery, and marketplaces exacerbate attribution errors, and explains that adopting incrementality requires organizational changes (incentives, agency pushback, revised KPIs) but yields clearer budget allocation and growth-focused investment. The article was published on Modern Retail and sponsored by Measured on 2026-07-02.
Nestlé Confirms Annual Targets Ahead of Q3 Results
Nestlé has reaffirmed its full-year 2026 guidance ahead of its nine-month sales report on October 22. The consumer goods giant expects organic sales growth of 3-4%, an improvement in operating margin, and a free cash flow above CHF 9 billion. In Q2 2026, organic growth reached 3.7%, driven by 1.8% real internal growth and 1.9% pricing. The company anticipates a more moderate price evolution in the second half as prior increases lapse. The 'Fuel for Growth' program achieved CHF 1.7 billion in cumulative savings by H1, targeting CHF 2 billion for the year. Marketing spend increased to 8.9% of sales in H1, a 30 basis point rise, and is expected to be maintained. Regional performance varied: Americas grew 2.8%, Asia/Oceania/Africa 6.5%, Europe 1.5%, Nespresso 3.4%, and water/premium beverages 6.6%. Currency headwinds are expected to negatively impact reported sales by around 3% in 2026.
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