What is amzn_user_data?

First-Party Context refers to collecting data directly through your own domain rather than third-party scripts. This approach increases trust, reduces browser blocking, and improves data longevity. In server-side setups, first-party context ensures identifiers, consent, and events are owned and controlled by the business, not external vendors.

Key Points
• Reduced reliance on third parties
• Better cookie persistence
• Improved privacy compliance
• Higher data accuracy