Zero-Party Data: The Future of High-Scale Personalisation

With the death of third-party cookies and increasing privacy restrictions on Meta and Google, the most valuable data is the data the user gives you willingly. This is Zero-Party Data. At User Actually, we believe the brands that know their customers best will win the next decade of ecommerce.

Why Third-Party Data Is Dying

For years, ecommerce brands relied on platforms to tell them who their customers were. Meta's interest targeting, Google's audience segments, third-party cookie pools — all of it is eroding. Privacy legislation, iOS changes, and browser-level tracking restrictions have made this data increasingly unreliable. The brands that built their growth on rented audience data are feeling it.

The "Quiz" Funnel Strategy

Stop asking for an email in exchange for a "10% Discount." That discount attracts deal hunters, not brand lovers. Instead, offer a "Find Your Perfect [Product]" Quiz.

By asking 4–5 questions — skin type, style preference, pain point, lifestyle — you gain more insight than years of Meta tracking could provide, and you get it directly from the customer, with their full knowledge and consent.

Integration Into Your Lifecycle System

Sync your quiz results directly to your email platform. Segment A — "Dry Skin" users — receives an email series about hydration. Segment B — "Oily Skin" users — receives content about matte finishes. Your click-through rates double because your content is finally relevant to the individual, not the average.

The Flywheel Effect

Zero-Party Data compounds. Each quiz completion makes your segmentation sharper. Sharper segmentation makes your email more relevant. More relevant email builds more trust. More trust generates more data willingly shared. The brands that start this flywheel now will have an insurmountable data advantage within two years.