Google Analytics 4 (GA4) represents a major shift from legacy Universal Analytics. Instead of tracking sessions and pageviews, GA4 uses an event-based data model where every user interaction is recorded as an event. This includes clicks, scroll depths, video views, and file downloads. This data structure allows for more flexible, detailed tracking across web and mobile application platforms.
Configuring GA4 requires registering custom event parameters to capture specific data, such as product names in a cart or conversion form fields. Marketers can build custom funnel exploration reports to identify where users drop off during checkout or booking processes. Attribution modeling in GA4 also helps distribute credit across different touchpoints, showing you exactly which ad campaigns are driving conversions. Setting up GA4 correctly is essential for data-driven marketing decisions.