1p-tagging-pixelslisted

# 1P Tagging & Analytics ## Overview Third-party cookies are dead. Apple ITP, Firefox ETP, and Chrome's phase-out have made browser-based tracking unreliable. The future is first-party data and server-side measurement — data your customers intentionally share with you that survives ad blockers, cookie restrictions, and platform changes. This skill covers the complete measurement stack: 1P vs 3P strategy, pixel implementation, UTM architecture, server-side tagging, consent management, and identity resolution. The output is a privacy-resilient analytics infrastructure that works when cookies don't. ## Frameworks Referenced This skill is grounded in public frameworks and source material relevant to the task: - **Privacy-First Measurement.** Use the relevant method or published guidance where it improves the requested deliverable; do not cite it as decoration. - **Server-Side Tagging Architecture.** Use the relevant method or published guidance where it improves the requested deliverable; do not cite it as decoration. - **1P Data Strategy.** Use the relevant method or published guidance where it improves the requested deliverable; do not cite it as decoration. ## When to Use - "Set up conversion tracking" - "1P vs 3P data strategy" - "Install pixels (LinkedIn, Meta, Google, TikTok)" - "Build UTM architecture" - "Set up server-side GTM" - "Implement first-party tracking" - "Fix attribution gaps" - "Set up cookie consent" - "Identity resolution setup" ## 1P vs 3P Data Stra