Incrementality Testing Becomes Formal Budget Justification Standard
Advertisers increasingly run controlled geo-holdout and matched-market incrementality experiments to validate marketing mix model output before committing budget shifts, treating experimental validation as a genuine risk mitigation practice rather than an optional analytics exercise. Roughly 33 percent of surveyed advertisers now run formal incrementality experiment programs, up meaningfully from levels reported just several years earlier as testing infrastructure matures. Vendors offering integrated experimentation and modeling capability increasingly win competitive evaluations against suppliers still relying primarily on standalone statistical modeling without built-in validation methodology requiring separate testing infrastructure and analyst expertise.
Market Impact: 48 percent cite deprecation as driver








