Google Analytics 4 is built around events. A high-quality setup starts not with dozens of tags, but with a short measurement plan: which business questions need answers and which user actions reveal them.
1. Define Key Actions
Create a list of events that have business value: form submission, checkout start, purchase, registration, document download. Do not mark every interaction as important, otherwise reports lose focus.
2. Distinguish Events, Key Events, and Conversions
In GA4, any interaction can be an event. Events that are important to business success are marked as key events. The term conversion is now used for actions applied to measuring and optimizing advertising campaigns.
3. Follow a Naming Scheme
Agree on event and parameter names before implementation. A consistent scheme simplifies analysis and reduces duplicate events such as form_submit, submit_form, and lead_sent for the same action.
4. Validate the Implementation
After setup, test events in DebugView, check their parameters, and make sure a single action is not sent multiple times. For e-commerce, correct item parameters and revenue values are especially important.
5. Interpret Data in Context
Sessions, engagement, acquisition, and key events answer different questions. Do not draw conclusions from a single metric: traffic growth is not a success if lead quality has declined.