Google Analytics

Google Analytics is a web analytics service that tracks and reports website traffic and user behavior. It provides insights into audience demographics, traffic sources, user journeys, and conversion funnels, answering the fundamental questions every web team needs: who is visiting, where they come from, and what they do on the site.

The platform shifted significantly with the move from Universal Analytics to Google Analytics 4 in 2023. GA4 uses an event-based data model rather than session-based tracking, better reflecting how users interact across devices and platforms. It also integrates machine learning to surface predictive metrics like purchase probability and churn risk, giving teams forward-looking data alongside historical reports.

For web developers, Google Analytics matters because it directly measures the impact of technical decisions. Page load times, Core Web Vitals, and JavaScript errors all appear in the data. Conversion tracking reveals whether design changes actually improve business outcomes. Integration with Google Ads, Search Console, and Tag Manager creates a connected measurement ecosystem that ties marketing spend to measurable results on the site.