Accurate conversion tracking is the single biggest factor in Google Ads campaign performance. Without it, Smart Bidding optimises toward the wrong signals and ROAS figures become unreliable. Performance Max campaigns in particular depend heavily on clean conversion data to function correctly.
RichMobo's conversion tracking review covers: purchase event firing accuracy, revenue value and currency passing, attribution window configuration, deduplication between Google tag and GA4, and backend order reconciliation against reported conversions.