Google Analytics 4

What Is Google Analytics 4?

Google Analytics 4 (GA4) is the current generation of Google's analytics platform, replacing Universal Analytics as of July 2023. GA4 represents a fundamental redesign built around event-based tracking, cross-platform measurement, and privacy-first principles designed to function in a world with diminishing cookie support.

Event-Based Data Model

Unlike Universal Analytics' session-based model centered on page views, GA4 treats every user interaction as an event. Page views, scrolls, clicks, file downloads, video plays, and custom interactions are all events with optional parameters. This unified model provides more flexibility in tracking diverse user behaviors across websites and applications.

Enhanced Measurement automatically tracks common events including page views, scrolls, outbound clicks, site search, video engagement, and file downloads without additional code. Custom events extend tracking to business-specific interactions.

Cross-Platform Measurement

GA4 natively supports tracking users across websites and mobile applications within a single property. User identity can be resolved through Google Signals, User ID, device ID, or modeled data, providing a more complete picture of the customer journey across devices and platforms.

AI-Powered Insights

Predictive Metrics use machine learning to estimate purchase probability, churn probability, and predicted revenue for user segments. Anomaly Detection automatically identifies significant changes in data trends. Insights surface important patterns and answer natural language questions about the data.

Exploration Reports

GA4's Explorations provide advanced analysis capabilities including funnel analysis, path exploration, segment overlap, cohort analysis, and user lifetime analysis. These tools enable deeper investigation than standard reports allow.

Privacy Design

GA4 was built anticipating the decline of third-party cookies and increasing privacy regulations. It uses data modeling to fill gaps when users decline tracking consent. IP addresses are not stored. Data retention periods are configurable. Country-level geographic reporting replaces city-level when consent is not obtained.

BigQuery Integration

All GA4 properties can export raw event data to BigQuery at no additional cost, enabling SQL analysis of granular event-level data. This integration opens possibilities for custom analysis, machine learning model training, and joining analytics data with other business data sources.

Why Use GA4

GA4 is the only version of Google Analytics receiving updates and new features. Its event-based model provides more flexible tracking, cross-platform measurement unifies web and app data, and its privacy-first architecture is designed for the evolving regulatory landscape.