For years, digital advertising ran on third-party cookies. Those small tracking files followed users across the web, feeding data back to ad platforms and allowing marketers to target, retarget, and measure with a level of precision that felt almost effortless.
That era is ending. And most businesses are not ready for what comes next.
Safari and Firefox have blocked third-party cookies by default for years. Chrome, which controls the majority of global browser market share, has been moving in the same direction — with user prompts and restrictions that are steadily reducing the availability of cross-site tracking data. [1] The result is a digital advertising ecosystem where the data infrastructure that most businesses built their targeting and measurement on is quietly eroding beneath them.
Only 15% of marketers report being fully ready for a cookieless world as of 2025. [1] That means 85% of businesses are operating with strategies that depend on data they are increasingly unable to collect.
The businesses that are getting ahead of this shift are not waiting for the transition to be complete before they act. They are building first-party data assets now — email lists, loyalty programs, CRM databases, and direct customer relationships that do not depend on third-party tracking to function.
The performance difference between businesses with strong first-party data and those without is already measurable. Research shows that companies using first-party data strategies see significantly stronger revenue growth compared to competitors still relying on third-party sources. [2] The advantage compounds over time because first-party data gets richer with every customer interaction, while third-party data availability continues to shrink.
What does building a first-party data strategy actually look like in practice? It starts with giving customers a reason to share their information directly with you. That means email opt-ins with genuine value behind them — not just a newsletter, but content, offers, or access that makes signing up worth it. It means loyalty programs that collect behavioral data in exchange for rewards. It means post-purchase surveys, preference centers, and any other mechanism that lets customers tell you directly what they want.
It also means being honest about what you are collecting and why. Research consistently shows that consumers are willing to share data when they understand how it will be used and when they trust the brand asking for it. [3] Transparency is not just a legal requirement in an increasingly regulated environment — it is a competitive advantage with an audience that has become deeply skeptical of how their data is handled.
The businesses that build strong first-party data assets now will have a durable advantage as third-party tracking continues to fade. The ones that wait will find themselves scrambling to rebuild targeting and measurement capabilities from scratch in a much more constrained environment.
Conversion Media Group helps businesses build the kind of owned audience and data infrastructure that performs regardless of what happens to third-party cookies. Call us at 1-800-419-3201 to talk about what a first-party data strategy looks like for your business.
[1] Omnibound, “First-Party Data Statistics”
[2] Piwik Pro, “First-Party Data Value”
[3] Forbes, “Bringing Your First-Party Data to Life in 2025”