Growing your first-party database: why, how and the mistakes to avoid

This month’s inaugural Martech Festival in Utrecht brought together the veterans and pioneers shaping the future of the industry. And with exclusively third-party data strategies all but consigned to the past, nothing says ‘future’ like first-party data.


I chaired a panel weighing up the importance of first-party assets, and it is not a spoiler to tell you that all voices were in complete agreement on the need for a customer-centric strategy across any given business, as we each seek to democratize the data we hold.


This can be easier said than done, of course. While marketing consultant and former VP of growth at Hudson’s Bay Company, Melle Staelenberg, pointed out that there is no better way to get to know your customer than to store customer profile information and behavioral data, he warned that the problem often lies in getting access to this valuable data.


“This is a really important era for anyone working in marketing. Third-party data will be more difficult to use, with customers not necessarily accepting being followed around or having their data shared,” he added, stressing the importance of platforms which help with liberating the data companies already hold.


In such a challenging context, John Sadeghipoor, director of marketing at Free People Europe, pointed out that the fashion brand’s focus is to “lean in” to its own channels, with the aim of generating “deep understanding” and “incredible shopping experiences” through data.

Meanwhile, Laura Paterson, senior marketing manager at Skyscanner, stressed the importance of a combination of high-quality first- and third-party data - pointing in particular to her brand’s success with meaningful partnerships - its investment in marketing automation platform impact.com having helped on that score.


The need for a range of incentives

The reality is that, faced with the prospect of losing access to third-party cookie data, a range of incentives will be needed to ensure that customers willingly share information about themselves. Paterson pointed out that transparency and informed conversations are key, while Sadeghipoor added that focusing on partners that complement brand values is critical. Quality content is also vital, he added, while promotions and competitions can help to grow a customer base.


Ask for less, get more?

But with businesses under pressure in a challenging economic context, the panel stressed the value of seeking to obtain the right data at the right time - as opposed to “over-asking”. Today’s explosion in loyalty programs represents one comparatively straightforward means of strengthening the first-party relationship and taking back control.


“Loyalty means different things to different people,” pointed out Staelenberg. “If you identify the most loyal [customers] and reach out with perks and promotions, then that’s a good loyalty program, right there.”


Never forget the omnichannel experience

The panelists also stressed the importance of the online and in store experience; stressing repeatedly how essential it is that valuable customer information is stored in a database that is easily accessible to marketers.

And given that many retailers have hundreds of thousands of SKUs on their sites, smart use of data also represents a good way to narrow down your offer to something more relevant to the individual.


And while the panel agreed that showcasing the most relevant products is not always easy - and requires the right data foundations - it is critical to avoid silos. “Everyone must see this as a priority for the business,” said Staelenberg. “The technology is there. Do lots of testing and tag products in the right way. It takes effort but it can be done.”


Alongside new technologies such as artificial intelligence (AI) and machine learning, quality, editorial content plays a big role here, including tips and personal recommendations. While suggestions can drive value, Sadeghipoor added that e-commerce has ‘a long way to go to replicate that human-to-human interaction and support you can feel in store’.


To this end, he added that extracting qualitative insights as well as quantitative data - in order to find out ‘what customers love and what they loathe’ - is key.


If first-party data is stored effectively, we agreed, it can be used as a lever to improve the experience. “Across every channel you can think of, your marketers can understand your customers better,” said Staelenberg, “which then helps with the creative side of marketing, and trying to acquire more of those types of customers. It’s a feedback loop and something that keeps on giving once you build out your first-party data.”


Building a case for investment is important too, of course - and Staelenberg’s advice was to make friends in other departments; for instance technology or product teams. “Find someone who can get you access to the data that you know your business is already storing and find a way, a hack, to get it into your CRM,” he said. “Then show the business how powerful it is to have access to that customer data before you even start a business case for a CDP (customer data platform).”


As we wrapped up the session, Paterson stressed the need to motivate talent to use this centralized stockpile of knowledge, with Sadeghipoor concluding: “Data is more valuable than gold: It’s that currency we trade with our customers to get to know them deeply - and ultimately to drive sales.”


Also published in: The Drum

More from our team & client partners

Fake it till you make it? Thought leadership’s got trust issues
September 15, 2026
It has never been easier to publish something polished, yet it is becoming harder to prove that the thinking behind it is genuinely yours.
The Credibility Premium: Why AI has just made riding solo impossibly expensive
August 14, 2026
For the last twenty years or so, brands have been rightly obsessed with their search rankings. But in the time it takes for consumers to completely reinvent their online research habits – which it turns out wasn’t very long at all – it has become clear SEO was the easy part.
Creator marketing: The growth engine brands can no longer afford to ignore
August 13, 2026
There was a time when creator partnerships were considered a ‘nice-to-have’ in supporting a marketing campaign. They were great for achieving an extra few likes and comments across social platforms, but rarely were creators considered central to an ad campaign, never mind a long-term growth engine.
Rob Hall, CEO of Parallel: “Digital Twins and ‘Customer Suitability’ can power better decisions
August 12, 2026
While brand safety and brand suitability help advertisers avoid harmful environments and align campaigns with brand values, Customer Suitability asks whether a video placement is right for the customer viewing it. Parallel combines proprietary AI, large-scale data sets and digital twins – synthetic replicas of consumer
Andy Squire, Brave Ads: “AI replacing traditional Search? It’s not as simple as that”
August 10, 2026
NDA spoke recently with Andy Squire, RVP Sales EMEA at Brave Ads, about the rapid evolution of the Search marketplace and how marketers can reassess their strategy for discoverability…
Brandtech’s Jellyfish Launches AI Ads Optimisation in Share of Model™
By Ren Bowman August 6, 2026
Jellyfish, a global digital marketing leader within The Brandtech Group, today announced AI Ads Optimisation, a major expansion of the paid media optimisation capabilities within its proprietary Share of Model™ Platform. The update extends beyond the existing Google Ads integration for Performance Max to generate media
Tinder ‘Dump Traditional Dating’: Alternative fourplay | The Digital Voice™
By Ren Bowman August 6, 2026
Oh the joys of online dating…are there any? Not according to many of those we know but maybe, just maybe Tinder has the answer, with its Double Date feature.
How adtech CEOs should use LinkedIn in 2026: a visibility playbook for the AI world
July 25, 2026
Everyone knows that CEOs should be using LinkedIn. But so often it’s something they promise they’ll get around to after the board meeting, after the investor update, product launch, client pitch, or one of a hundred other urgent tasks competing for attention. It's time to stop treating LinkedIn as a nice to have.
Stop the scroll: how to win at SEO in the age of AI search | The Digital Voice™
May 14, 2026
How people seek and find information, optimising for the front page of search engines is no longer optimal. GEO has made technical SEO more important than ever.
Show More