Google Analytics 4 (GA4)
Also known as: GA4, Google Analytics
In short
Google’s analytics system for measuring website and app activity through events and using that data in reports, explorations and connected measurement workflows.
Build reports from events
Google Analytics 4 uses events to represent activity. A page view, product interaction and completed purchase are different events. Parameters provide additional context, such as which product or transaction an event concerns.
Some events are collected automatically or through enhanced measurement. Others require implementation. Turning on basic analytics does not automatically create a complete and accurate e-commerce measurement plan.
GA4 analyzes the information it receives. Google Tag Manager can help deploy measurement tags, but it is a separate system. Installing a tag manager is not the same as configuring GA4 events and reports.
Illustrative workflow
Imagine a fictional store measuring product views, cart additions and purchases. The team implements the appropriate events and product parameters, then checks whether completed orders appear with the expected values.
Those events support questions about the shopping journey. They do not replace the order database, which remains the business record for fulfillment and accounting.
Read the report’s scope
A user, a session and an event are different counting units. Confirm which one a report uses before calculating a rate or comparing totals. Consent choices, implementation gaps and processing behavior also affect observed data. Define important outcomes consistently and investigate discrepancies rather than assuming every analytics number is an exact transaction ledger.