There is a particular kind of silence that rears its ugly head after the reports are in: the silence that follows the legal department when they ask a simple question: Where did this data come from, exactly?
They aren't asking where it came from in theory, but how it was collected, why, and the very specific sources from which it originated.
If you have ever watched a room of competent, well-intentioned people suddenly realize they cannot answer that question with confidence, you already understand what “life after cookies” is really beginning to look like.
I think that my stance on the subject is fairly straightforward:
A durable first-party data strategy is not built by replacing third-party cookies with a different identifier. It requires earned permission, kept promises regarding data usage and stewardship, and wiring your collection and retention systems so that consent and governance travel with the data.
That stance fits Entirely’s DNA, too. We are European, and that comes with some extra burdens that we are content to carry. We tend to treat data protection less like a compliance project and more like a social contract. In the most regulated markets, governance is not optional, and auditability cannot be bolted on later.
Cookies are still the headline, even if the world has moved on
Even if you are not living in paid media every day, browser changes and changes to social media networks keep nudging the same truth into the boardroom.
Safari moved to full third-party cookie blocking Firefox blocks cross-site tracking cookies by default. Chrome’s path has been less linear, but even Google’s own messaging emphasizes increased tracking protections and user choice, rather than the old default assumptions.
If you lead marketing in a regulated business, you feel the consequence in a very specific way: the “gray areas” you used to tolerate start turning into bright red exceptions.
So, yes, cookies matter.
But the lasting lesson is this: you cannot outsource trust to a technical mechanism. Browsers can remove a tool. Regulators can rewrite a rule. Customers can change their expectations overnight. The only thing that holds is what you can explain, defend, and repeat.
The mistake is treating first-party data as a loophole
“First-party data” is often sold as the safe alternative, as if the label itself provides protection.
It does not.
First-party data can be collected poorly, stored carelessly, shared too widely, and activated in ways that still feel invasive. If you have ever had a customer say some version of “How did you know that?” you know the moment. They start reading your brand like a contract, not a relationship.
This is why I keep coming back to zero-party data.
Zero-party data is data a person intentionally shares with you. It is explicit. It is legible. It forces you to be honest about the value exchange.
We made the case for this in our Report on Zero-Party Data and Composable Marketing.
The point is not that every interaction must be a survey or a quiz. The point is that your entire strategy should be designed so a human could understand it without needing an attorney to translate it.
A first-party data strategy that lasts
When I say a strategy that “lasts,” I mean that it is able to survive these realities:
- your tech stack changes,
- your agency changes,
- your measurement model changes,
- browser defaults change,
- and regulation gets tighter, not looser
- public sentiment regarding data changes
A durable first-party strategy is an operating model with a few non-negotiable traits.
1) Consent that can withstand a serious question
In mature organizations, consent is a record of a transaction, not a gate or checkbox to be filled.
That record needs context: what was presented to the person, what they agreed to, for what purposes, and how that agreement can be withdrawn.
Users are beginning to see their data as a currency to be traded - and valued.
If you cannot prove consent in a way that makes sense outside your own tools, you do not have consent. You have hope, and possibly a legal problem on your hands.
This becomes especially real when consent needs to be respected across teams and systems: marketing automation, service platforms, preference centers, event tools, social channels, and analytics.
2) A value exchange that your customer would recognize as fair
Once again: data is a currency. You need it, and your customers have it. In the past, when we had more opaque marketing and data collection processes, they tended to just hand over this information without much thought.
Modern regulations and a shift in public awareness has made this - rightfully - less easy to exploit, and people are waking up to the reality, especially as the implications with AI are greater than ever before.
First-party programs fail quietly because they never answer the customer’s internal question:
Why should I give you my data? What's in it for me, really?
Sometimes the value is obvious: order tracking, account management, service, safety updates.
Sometimes it is marketing value: better recommendations, fewer irrelevant messages, early access, meaningful personalization.
Most of the time, the value being exchanged is not clear at all.
The exchange has to be felt in the customer’s day, not just in your segmentation spreadsheet.
This is where zero-party thinking sharpens first-party practice. Instead of “What can we capture?” you start with “What can we credibly offer?”
3) Identity resolution with restraint
There is a temptation in the post-cookie era to treat identity resolution as the finish line.
In regulated businesses, in particular, it is rarely that simple.
A durable strategy treats identity as a tool you use only when it is necessary and appropriate. Sometimes you need a known customer profile. Sometimes you need a pseudonymous session. Sometimes you need aggregation. Sometimes the correct approach is to not identify a person at all.
Restraint should not be seen as a limitation, so much as what keeps your program defensible.
4) Activation that is composable, not trapped
A painful pattern shows up in martech procurement: companies “solve” first-party data by centralizing it into a system that becomes difficult to connect, difficult to govern across, or difficult to change without starting over.
Durability comes from composability. Composability in marketing means that you can connect best-of-breed systems, keep clean boundaries, and still orchestrate end-to-end customer experiences.
Here is the practical test: if you replaced one major system in 18 months, would your first-party strategy get stronger, or would it collapse? If the answer is collapse, you have a platform dependency, not a strategy.
5) Governance that matches your risk profile
In regulated industries, governance is not a “data team responsibility.” It is how work gets done.
Who is allowed to create a new audience? Who can export it? Who can enrich it? Who can approve a new data source? Who can audit what happened, and when?
What “good” looks like in the day-to-day
If you want storytelling that actually maps to a reader’s life, it is here, in the moments nobody writes case studies about:
- The campaign manager who wants to launch on Tuesday, but cannot confirm whether the audience includes people who opted out last week.
- The data lead who is asked to “just pull the segment,” but cannot trace where half the fields originated.
- The customer service leader who discovers Marketing is using data collected for service purposes to drive promotions, and now has to explain it to a regulator or a consumer advocacy team.
- The CMO who realizes that the real cost is not lost targeting. It is the internal friction of running a program that everyone worries is indefensible.
A durable first-party strategy reduces those moments, not by slowing marketing down, but by making the rules of engagement clearer and more consistent.
A practical way to start
If your organization is midstream, here is a pragmatic sequence that avoids the two extremes of “do nothing” and “replatform everything.”
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Write the value exchange in one paragraph.
Not for the executive deck. For the customer. If you cannot write it, you cannot defend it. -
Map your first-party collection points and label the purpose.
Web, app, email, events, service, loyalty, social. For each: purpose, retention, consent basis, and owner. -
Add one zero-party moment where it genuinely helps.
Preference centers are underrated. They are also honest. Start there. -
Make consent portable.
Ensure your consent state is not trapped in one tool. Your data strategy cannot be stronger than your consent enforcement. -
Choose composable activation paths, not one-way doors.
Avoid architectures that force all value into a single system that becomes too hard to change later.
The closing thought
“Life after cookies” can sound like deprivation, like marketing is being asked to give something up.
I think it can be thought of more as a correction. It's an opportunity for marketers to build more trust between their users, customers, or followers. At a time in which we are struggling to maintain these relationships due to more wary, educated users, and AI that plays with data in unprecedented ways, it's important that we rethink the way we extract the information we need.