Measurement is not there to prove marketing works – it help us make better choices
Hundreds of people descended on London this March for the Alliance of Media Independents’ Media Effectiveness: Packing a Punch event – bringing together the UK’s independent media agency community to discuss how to drive brand outcomes through impact measurement.
Here, Rebecca Shaw, Client Services Manager at MetaMetrics – who attended the event – explores some key takeaways from the proceedings.

Marketing effectiveness isn’t just a measurement problem, it’s an application problem.
I went to the Alliance of Media Independents’ Media Effectiveness: Packing a Punch event the other week – expecting to hear about creativity, media strategy and brand.
What I didn’t expect was how much of the conversation would centre around one thing: measurement. Again and again, the same questions came up. How do we prove it works? How do we justify investment? How do we make better decisions?
And, while those questions matter, I left thinking something slightly different. Measurement isn’t the only problem anymore. The bigger gap is what we do with it.
Most organisations aren’t starting from zero. They have data – and often a lot of it. They have reports, dashboards and, in some cases, econometric models.
Measurement isn’t perfect and it never will be. There are gaps, assumptions, and uncertainty. But, in many cases, it’s good enough to guide better decisions.
And yet the same challenges keep showing up. Short term pressure overrides long term thinking and there is hesitation to act on what the data is saying. There is constant questioning of whether results are robust enough. It is not that we cannot measure effectiveness. It is that we do not always feel confident acting on it.
Remember, you cannot optimise your way out of a brand problem
One of the best analogies I heard came from Shazia Ginai, Group CEO at Neuro-Insight. She described a brand like Cadbury as a room in your mind. In her version, it is painted purple, with a gorilla playing the drums. It is distinctive, memorable, fully furnished. In mine, there is a little girl buying chocolate with buttons. That is the brand.
Performance marketing is like turning the light on in that room. It drives visibility, brings people in and creates action. But the point is simple. There is no value in turning the light on if the room is empty.
Most measurement conversations focus on the light. How often it is switched on, how bright it is and what happens when it is. Far fewer focus on the room itself. What has actually been built, whether it is distinctive and whether it is worth stepping into.
Optimisation absolutely matters. It drives efficiency and short-term gains – but it cannot fix a lack of positioning, weak creative or a brand that people do not notice or remember. You cannot optimise your way out of a brand problem.
And yet many measurement conversations start after those foundations should already be in place. Measurement becomes a way of validating decisions, rather than informing better ones.
The organisations that get the most from measurement do not just ask what worked. They ask what should we do differently, what should we stop doing, and what are we underinvesting in. Crucially, they act on the answers.
So how do we act on measurement in marketing?
Acting on measurement is not easy. It means backing long-term investment when short-term pressure is high. It means stopping activity that feels safe. It means making decisions without perfect certainty.
That is where most organisations get stuck. Not because they lack data – but because acting on it carries risk.
The opportunity now is not just better measurement, but better application. That means translating outputs into clear decisions, building confidence with stakeholders early and connecting measurement to real commercial outcomes.
Because, ultimately, measurement is not there to prove marketing works. It is there to help us make better choices.
If you'd like to explore how MetaMetrics can help you make better decisions through more effective measurement application: