Cookie Myths: The Proven Way to Win With First-Party Data

For years, marketers braced for a “cookieless future.” Apple’s Safari and Mozilla’s Firefox already block third-party cookies by default, and Google spent years planning to phase them out of Chrome. Then, in 2024, Google changed course and decided to keep third-party cookies, with more user choice instead. But the shift toward first-party data, and the data governance that comes with it, was already well underway.

So is the cookieless future a myth? Not quite. Whatever happens with cookies, privacy expectations and regulations keep rising. And that makes first-party data more valuable than ever.

It’s widely recognized that first-party data, sometimes called 1P data, is a powerful tool for building customer relationships and driving better business outcomes. Yet many companies still struggle to use it well. In 2021, Boston Consulting Group reported that fewer than one in three companies were creating a single customer view across channels. Only 1% to 2% used data to deliver a full cross-channel experience.

Beyond marketing, first-party data also adds valuable context to primary research findings, making it an important part of any insights team’s toolkit. Getting the most from it takes investment in infrastructure, a clear customer data strategy, and a culture committed to good data governance.

First-, Second-, and Third-Party Data

Let’s start with a quick review of the types of data available.

• First-party data is information you collect directly from customers through channels you own. It can include contact details (names, email and mailing addresses, phone numbers), invoice and payment data, and demographics like age, gender, income, and employment. It also includes tracked behaviour, like comments, downloads, and pages visited.
• Second-party data is another organization’s first-party data, shared with you by a trusted partner. Airlines, for example, share data with their credit card partners.
• Third-party data comes from outside sources that collect, aggregate, segment, and sell it.

Second- and third-party data are relatively easy to use and need little investment in infrastructure. But the companies that provide them control what you receive, including its age, accuracy, and quality. Useful metadata can also get lost along the way. And third-party data isn’t exclusive, since your competitors can buy it too.

First-party data, by contrast, is yours from start to finish.

Why First-Party Data Is So Valuable

First-party data often takes more time and effort to process. But over time, it offers the highest return of any data type:

• It costs less long-term, because it cuts out the middleman.
• You control its accuracy and quality.
• You control privacy and data protection, both growing concerns for consumers and regulators.
• It’s more relevant. Because it comes from your own customers and prospects, it’s more reliable than second- or third-party data that may or may not reflect your audience.
• It builds trust. Asking for consent and explaining how you use data shows customers you respect their information.

The result is a deeper understanding of your customers. That helps you create more relevant experiences and stronger relationships with your brand.

How to Make the Most of First-Party Data

Build a Customer Data Strategy

Start with a customer data strategy. Understand your sources, what you’re collecting, how, and why. Typical sources include loyalty programs, online interactions, and other touchpoints, like support calls.

Many organizations collect as much data as possible without a clear plan to use it. That’s bad practice. Extra data burdens customers and makes storage and management more complicated and expensive. Instead, start with a roadmap that ties specific customer experience goals to business objectives.

Timing matters too. Much of first-party data’s value comes from its immediacy. It loses value quickly, so you need to act on it fast, even in real time. At the same time, long-term storage gives you valuable historical perspective.

Build the Right Tools and Team

You’ll need the ability to:

• Pull data from different sources, including technology partners, and integrate it across platforms
• Resolve identities and build individual customer profiles
• Test and learn to find the best approach to targeting and personalization

Beyond technology and processes, your analytics team needs the skills to turn that data into the business outcomes you want.

Offer a Transparent Exchange

Privacy expectations keep evolving, and so do consumers’ attitudes toward sharing their data. Loyalty programs are a proven model: customers share data in exchange for rewards. They’re a good starting point for engagement and retention.

Look for other natural moments to invite account creation and data sharing too, like when a customer starts a return or exchange. And consider new channels and platforms you haven’t used before.

Either way, the key is transparency. Acknowledge that customers control their own data. Then offer something relevant in return, like a better product experience.

Data Governance Is Essential

First-party data can build trust and strengthen customer relationships. But a single privacy lapse, or even a perceived one, can seriously damage your credibility.

That’s why strong data governance starts with a consent management system. It ensures you only use customer data for the purposes customers agreed to. And as you link device-level data to unified customer profiles, remember that the same connections that power personalization also carry privacy risks.

Where First-Party Data Meets Primary Research

First-party data shows you what your customers do. It rarely tells you why they do it. That’s where primary research comes in.

Surveys and other research methods fill the gaps first-party data leaves:

• The “why” behind behaviour. Research uncovers the motivations, attitudes, and perceptions behind the actions your data tracks.
• People you don’t know yet. Your first-party data only covers existing customers and prospects. Research helps you understand the wider market, including competitors’ customers and audiences you haven’t reached.
• Testing before you invest. Research lets you test new products, messages, and ideas before they reach your customer base.

Together, first-party data and primary research give you a complete picture: what customers do, why they do it, and where your next opportunities lie.

The Bottom Line

Third-party cookies may be sticking around in Chrome for now. But privacy expectations aren’t going backward. Building the ability to use first-party data well, with strong data governance and primary research, has become a smart strategic investment.

Want to add the “why” to your first-party data? [Contact our team] to explore how research can complete the picture.