Why marketing measurement needs to catch up with media abundance
Article 24 of 26 in series: The Great Reach Reset
Marketing has more channels, platforms, content and data than ever before, but more choice does not automatically create more clarity. As audiences fragment across media, marketers need a common view of reach, frequency and overlap to understand whether campaigns are genuinely expanding their audience or simply reaching the same people more often.
The media system has changed, but our way of measuring has not
Rohan Tambyrajah, Global Chief Strategy Officer at PHD, described the challenge facing modern marketing in one sentence:
“Marketing is a scarcity-based system operating in an age of abundance.”
I think he is absolutely right, because the marketing system was built for a world with relatively few channels, limited advertising space and audiences concentrated around a smaller number of media environments. In that world, advertisers could reach a large part of the population through a few major channels, and buying more advertising in those channels was a reasonably reliable way to reach more people.
Today, consumers divide their time across linear television, streaming services, online video, social media, search, publishers and many other digital environments. Rohan showed that the growth in media fragmentation has been much greater than the growth in the total time people spend with media, which means that we have not created much more human attention, but simply divided that attention across many more places.
AI will make this development move even faster as content becomes easier to produce, media experiences become more personalised and digital agents begin to influence how people search, compare products and make decisions. However, recognising that marketing has entered a new age is not the same as knowing how to navigate it, and this is where I believe the industry still has a fundamental problem.
Why more marketing data does not necessarily create more clarity
The advertising industry has responded to fragmentation by adding more platforms, more specialists, more dashboards and more metrics. Every platform can now explain how many impressions it delivered, how many people it reached and how effectively its own part of the campaign performed, but marketers still struggle to see what happened across the campaign as a whole.
A person reached on television may also have seen the campaign on YouTube, Meta, TikTok or a streaming service, and when each platform reports its reach separately, the same person can appear several times in the results. A campaign may therefore seem to have reached a very large audience when it has actually reached a smaller group of people many times, while a significant part of the target audience has not been reached at all.
This is the real challenge created by abundance. Advertisers have more opportunities to reach consumers than ever before, but they have less visibility into whether adding another platform is reaching new people or simply creating more exposure among people who have already seen the campaign.
The individual platforms may all report strong results according to their own metrics, while the campaign as a whole still delivers too much frequency to some people and too little reach among everyone else. More data does not solve this problem when the data is kept within separate systems, because marketers can optimise every individual part of a campaign and still fail to optimise the whole.
The most important question is therefore not whether each platform performed well on its own, but whether the total investment reached enough people, created the right level of frequency and used the budget in a way that supported the brand’s growth objectives.
Cross-media measurement must follow the consumer
When consumers move freely across media, measurement must be able to follow them across those same environments, because the consumer does not experience a campaign as a collection of separate platform reports.
Cross-media measurement gives advertisers a common view of reach and frequency across channels, allowing them to understand how many people the campaign reached in total, how much overlap existed between the platforms, which channels added new audiences and where frequency became too high. It also helps marketers identify the people who were not reached and decide where the next euro should be invested to expand the audience rather than simply adding more impressions.
These are not only technical measurement questions, because they are directly connected to how brands grow. Brands need to reach large numbers of potential buyers and remain available in their minds when they enter the market, and in a fragmented media environment, achieving that broad reach will often require a combination of channels. However, adding more channels without understanding the overlap between them can create the appearance of scale without actually creating more scale.
This does not mean that every impression has the same value or that reach should be the only measure of success, because attention, creative quality, context and business outcomes all matter. However, before marketers can properly understand what their advertising achieved, they need an independent and comparable view of who was exposed across the entire campaign.
Rohan is right that growth needs a new system, and AI, new interfaces and changing consumer behaviour will all be part of that system. However, the age of abundance does not suffer from a lack of data, but from a lack of a common perspective, because as long as every platform measures its own contribution independently, marketers will continue to make decisions based on disconnected versions of the truth.
Cross-media measurement must therefore become part of the new marketing system, because it is becoming impossible to navigate an age of abundance with measurement designed for a world of scarcity.
This article is 24 of 26 in our series: The Great Reach Reset
About this article series
In a fragmented media landscape, reach is no longer a simple KPI - it is a strategic growth lever. In this article series, AudienceProject explores why advertisers are not failing at reach, but at measuring it properly, and why incremental, deduplicated cross-media reach has become essential to driving penetration, controlling frequency, and unlocking sustainable growth.
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