First-Party Data Strategy: Preparing B2B Marketing for a Cookieless World

If you've been holding off on a first-party data strategy because "Google's killing cookies soon anyway, so we'll deal with it then," it's worth updating that assumption. Google isn't killing them. In April 2025, it reversed course entirely, and by October 2025 it had quietly shut down the Privacy Sandbox APIs that were meant to replace them. The headline everyone braced for never actually landed the way it was expected to.

That reversal doesn't mean the first-party data conversation is over, though. If anything, it exposes why B2B marketing needed to build this muscle regardless of what Chrome ultimately decided.

Correcting the Record

Here's what actually happened, because the popular narrative is now genuinely out of date. Google originally planned to phase out third-party cookies in Chrome entirely. After several delays, it reversed that plan in April 2025, opting instead to keep third-party cookies functioning much as they always have, with existing browser privacy controls rather than a forced deprecation. OneTrust's coverage of the announcement confirms Google will continue supporting third-party cookies in Chrome without adding a new choice prompt, meaning Chrome users won't even be asked to make an explicit decision about them. Then, in October 2025, Google's own Privacy Sandbox programme wound down the alternative APIs, Topics, Protected Audience, Attribution Reporting, that had been built over roughly six years specifically to replace cookie-based tracking. Chrome kept the cookies. It just abandoned the replacement technology built to succeed them.

So Chrome, the world's most widely used browser, isn't cookieless after all. But that's a narrower win for advertisers than it sounds, because the rest of the picture never actually depended on Chrome's decision in the first place.

Why the First-Party Data Case Was Never Really About Chrome

Safari and Firefox have blocked third-party cookies by default for years, unaffected by anything Google decided. Combined with privacy-focused browsers like Brave and the growing share of users running ad blockers, a meaningful slice of web traffic was already effectively cookieless before Google's reversal, and remains that way after it. Layer on top of that the tightening regulatory environment around consent and data privacy across most major markets, and cross-site tracking has been getting structurally less reliable for years, independent of any single browser's roadmap.

For B2B specifically, there's an additional, more fundamental reason third-party cookies were never a great foundation to build on. Cookies track a single browser on a single device. B2B buying committees involve multiple people, researching across multiple sessions, often switching between a work laptop, a personal phone, and shared devices over a sales cycle that can run for months. Even in a world where Chrome had fully deprecated cookies as originally planned, that fragmented, multi-person, multi-device journey was always the harder problem, and first-party data is the more durable answer to it either way.

What a First-Party Data Strategy Actually Involves

Most of this data was already sitting inside tools B2B companies already use, a CRM, a marketing automation platform, a website. The strategy isn't necessarily about buying new technology. It's about deliberately connecting and activating data that's often already being collected, but rarely used with any real intent.

Building the Strategy in Practice

Audit what you're already collecting before assuming you need more. Most B2B companies already have far more first-party data than they're actively using, sitting disconnected across a CRM, a marketing automation platform, and website analytics that were never properly wired together. Fixing that connection is often the highest-leverage first step, and it's considerably cheaper than any new data acquisition strategy.

Give people a genuine reason to share information directly. Gated content, product trials, interactive tools like ROI calculators, and preference centres all create natural, low-friction opportunities to collect zero-party data, provided the exchange feels fair to the person providing it rather than a barrier thrown up purely to capture an email address.

Invest in identity resolution across your own owned channels. Even without third-party cookies, stitching together a single account's activity across your website, email engagement, and CRM history requires deliberate identity resolution work. This is exactly the kind of unification a CDP is built to handle, connecting fragmented first-party signals into one coherent account view.

Treat consent and transparency as a feature, not a compliance box to tick. B2B buyers, particularly the more senior, risk-aware stakeholders on a buying committee, respond better to a company that's transparent about what it collects and why, than one trying to quietly maximise data capture. Clear, honest data practices are increasingly a trust signal in their own right, not just a legal requirement.

What This Means Practically for Campaign Planning

None of this requires panicking about a Chrome deadline that, for now, isn't actually coming. It does mean building targeting and retargeting strategies that lean more heavily on first-party audiences, website visitors, CRM segments, email engagement, rather than assuming third-party cookie-based retargeting will remain reliable indefinitely across every browser your buyers actually use. It also means investing more deliberately in content and experiences designed specifically to earn zero-party data, since that's the one category of data no browser policy, present or future, can take away from you.

The Companies Ahead of This Aren't Waiting for the Next Google Announcement

Here's the genuinely exciting part: while everyone else was bracing for a Chrome deadline that never came, the B2B companies that built first-party data infrastructure anyway are already sitting on cleaner targeting, sharper retargeting, and a far more resilient marketing engine than the ones still waiting to see what Google does next. This isn't a compliance exercise. It's a real competitive edge, and it's available right now, no browser update required.

Digital Squad builds exactly this kind of infrastructure through our data analytics work, connecting your CRM, website, and marketing automation data into a unified first-party foundation that doesn't depend on any single browser's roadmap. From there, our LinkedIn marketing and content marketing teams put that first-party data to work, sharper audience targeting, content built specifically to earn zero-party data from your buyers, and retargeting that holds up regardless of what Chrome decides next year. Want to see how much first-party data your business is already sitting on, unused? Let's dig in together, the answer is usually more exciting than people expect.