Customer data collected directly by your brand from your own channels — website, email, SMS, and purchase history — as opposed to third-party data bought from data brokers or collected by platforms.
First-party data has become increasingly important post-iOS 14+ and cookie deprecation. It includes email addresses, purchase history, on-site behavior (via pixel), survey responses, and preference data. D2C brands that invest in first-party data collection (email list growth, Klaviyo profile enrichment, post-purchase surveys, loyalty programs) are significantly more resilient to platform privacy changes than brands relying on Meta and Google for targeting.
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