以下何者是使用強化轉換的必備條件？

Enhanced conversions require Google Ads conversion tracking as the conversion source because the feature builds upon existing Google Ads conversion data. It allows advertisers to send first-party customer data (like hashed email addresses) from their website or CRM directly to Google Ads, which then uses this data to improve the accuracy of conversion measurement. Without Google Ads conversion tracking in place, there's no foundational conversion data for enhanced conversions to augment. While Google Analytics can track conversions, it's a separate system from Google Ads conversion tracking for this specific feature. Using Google Display Ads or DV360 is about ad placement, not the conversion tracking mechanism itself. Having matching email addresses and phone numbers is part of the data sent for enhanced conversions, not a prerequisite for enabling the feature itself.