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Digital analytics rests on three foundational concepts — events, sessions, and users — and confusing them leads to dashboards that measure the wrong thing entirely. Getting this vocabulary right is the prerequisite to every analysis you will ever run.
Use these three in order. Each builds on the one before.
In one paragraph, explain the difference between an event, a session, and a user in Google Analytics 4 as if I've never used an analytics tool before.
Walk me through exactly how GA4 stitches individual events into sessions and sessions into users — what identifiers are used and when does a new session start?
Given a single-page app where the URL never changes, how would the events-sessions-users model break down and what implementation changes would you make to fix it?