IAB Australia warns ad measurement is hitting a data wall

IAB Australia says fragmented data, rather than a lack of measurement tools, is becoming the biggest obstacle to understanding advertising’s overall business impact.

The first findings from its Future of Measurement review show confidence remains relatively strong when assessing individual media channels. That confidence drops when marketers try to understand how channels work together.

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Industry calls for a common data standard

The clearest request from respondents was a shared taxonomy for campaign data. IAB Australia said this could support marketing mix modelling, attribution and experimentation without requiring separate data structures for each method.

The review pointed to IAB US’s Campaign Data Standards 1.0, released in August 2026, as an example of global work Australia could adapt rather than recreate.

Natalie Stanbury, Director of Research at IAB Australia, said: “This review confirms what much of the industry has felt for some time: while there is confidence in individual channels, there is less confidence in how they work together to demonstrate business outcomes.

“The consistent message from respondents is that the industry doesn’t need another standalone measurement method. It needs to build on strong foundations, starting with a common standard for structured campaign data that every measurement method can rely on.”

Clean rooms and AI are not silver bullets

The review found data clean rooms are frequently nominated as a solution for privacy-safe data collaboration, but remain among the least implemented options in practice.

It also found artificial intelligence could accelerate data preparation, modelling and reporting. However, IAB Australia said AI cannot compensate for poor-quality data and introduces new questions about what evidence automated buying systems can rely on.

Separate IAB US research cited in the review found just 39 per cent of US buy-side decision makers use marketing mix modelling, attribution and incrementality together.

Cross-media measurement remains a major gap

IAB Australia identified cross-media audience measurement for media planning as another unresolved challenge. Australia’s channel-specific measurement currencies still operate largely in separate systems.

The industry is calling for greater alignment of metrics and definitions, as well as more integration between datasets. The existing OzTAM and Ipsos iris integration was cited as a model for how different audience datasets could work together.

The review also found support for maintaining economically sustainable, industry-endorsed digital audience data. Agencies and media owners continue to use independent and comparable datasets to assess advertising environments and allocate investment.

Suzie Cardwell, Chair of IAB Australia and Chief Data, Product and Technology Officer – Enterprise at Nine, said: “Good measurement starts with good data. If campaign data isn’t clean, consistent, and comparable across channels, no amount of modelling sophistication will make up for it.

“This review gives the industry a practical starting point. Agree the taxonomy, agree the standards, and build from there.”

Eight priorities to shape 2027 strategy

The findings have produced eight priority areas and a series of proposed initiatives. These will be considered by IAB Australia’s Measurement, Ad Effectiveness, Data, Retail & Commerce Media Councils as it develops its 2027 measurement strategy.

The review draws on qualitative interviews with senior marketing, strategy, measurement, data and insights executives across 34 companies. It also incorporates findings from IAB Australia’s State of the Nation buy-side surveys and Australian and international secondary research.