Ackee is a privacy-focused web analytics option. Before switching, define the questions the dashboard must answer—perhaps which articles receive traffic or whether a campaign produced visits. Send test traffic with known source parameters and compare the candidate's reported events with the expected count.
Check consent requirements, retention, bot filtering, and whether the team can export historical figures. Differences from another analytics product are not automatically errors; their collection methods may differ. Document the definition of each metric so that a graph after migration is not mistaken for a continuous series when the measurement changed.