Summarizing Adobe's definition: First-Party Data [FPD] gives you insights from analytics and user behavior. First-party data is proprietary data that has been captured by your organization. This could be through channels such as onsite analytics audience information, the capture of various web behaviors in relation to specific experiences, or any offline data such as Customer Relationship Management [CRM] data or data from a brick-and-mortar store. Compare with Second Party Data.
