Analytics & Attribution

First-Party Data

Quick definition

Customer data you collect directly (purchases, behaviors, preferences) — owned, durable, and immune to third-party cookie loss.

What it actually means

First-party data is the strategic moat as third-party cookies phase out. Sources: Shopify customer records, Klaviyo profile properties, on-site behavior, quiz responses, post-purchase surveys, SMS opt-ins, loyalty program data. Activated well, first-party data powers segmentation (Klaviyo flows), audience matching (CAPI, Google customer match), and personalization. Brands investing in first-party data infrastructure outperform peers as ad platforms tighten privacy.

Related terms

CAPI (Meta Conversions API)

Server-side event tracking from your store to Meta, replacing browser pixel events lost to iOS privacy changes and ad blockers.

Segmentation (Email)

Splitting your email list into groups based on behavior, profile, or purchase data so each group receives relevant messaging.

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