Setup drift is one of the largest and least visible drivers of media waste.

Our research with Prof. Pauwels quantifies this impact for the first time at scale — showing up to 38% overstated spend directly linked to execution inconsistencies.

This article summarises the findings and explains why media governance is becoming the new operating system of advertising.

For all the sophistication in today’s digital ecosystem: AI-driven optimisation, automated delivery systems, multi-format architectures, one thing remains surprisingly fragile: Campaign setup. And this fragility has real financial consequences.

In partnership with Prof. Koen Pauwels (Northeastern University), we analysed thousands of awareness campaigns across Meta and DV360 to quantify the financial impact of setup drift. An element of execution that is rarely measured yet present in every organisation.

The study validated broad Adfidence methodology built over two years to define, measure and govern the setup foundations that drive media efficiency.

The results were clear. When campaigns deviate from best-practice setup e.g. in frequency capping, pacing ,placement controls, media costs rise sharply while incremental reach plateaus. This widening gap between impressions paid for and impressions that add value functions as a hidden tax on performance.

Across multiple markets, campaigns with loose or absent caps delivered lower effective reach at significantly higher cost, generating what the study classifies as non-incremental exposures.

In total, the data shows that setup drift can overstate media spend by up to 38% — and platforms rarely surface this loss because they optimize for delivery, not efficiency.

What matters most is that the path to improvement was equally clear. When setup quality was corrected even without changing creatives, audiences, or budgets efficiency improved within days. In multiple markets, better setup alone delivered double-digit gains in effective reach, lower CPMs, and significantly more predictable delivery curves.

Why this matters now:

Digital media is entering a new phase. Automation accelerates, but so do the risks. Platform defaults shift. Optimisation models update. Creative signals increasingly override human intentions. Most organisations lack a single source of truth on how campaigns are executed. In this environment, setup is no longer a technical detail. It is an operational and financial level directly affecting the P&L.

As Prof. Pauwels’ research highlights, small setup deviations can have effects comparable to large budget changes. Yet, while marketers scrutinise creative rotations and audience segments, there is one place they tend to never look and where all decisions take place : campaign set u

Where Adfidence fits in: Adfidence was built precisely for this challenge. We provide the execution layer the media ecosystem has long been missing: continuous, cross-platform governance that prevents setup-driven waste.

Agencies partner with us because stronger governance protects their work. Advertisers rely on us because setup quality become a strategic differentiator. Boards care because the financial impact is no longer theoretical — it is measurable.

Media governance is no longer optional — it is foundational. And Adfidence is leading the shift toward this new operating system.