What's a requirement for using enhanced conversions?

Enhanced conversions require Google Ads Conversion Tracking as the conversion source. This is because enhanced conversions work by securely hashing and uploading first-party customer data (like email addresses) collected on your conversion page, then matching it against Google's logged-in user data. This process directly integrates with and enhances the data collected by Google Ads Conversion Tracking. The other options are incorrect because: Usage of Google Display Ads or DV360 as the main ads buying platform is not a prerequisite; enhanced conversions apply across various campaign types. While email addresses and mobile numbers are used for matching, this option describes what is used, not the fundamental requirement of the conversion source itself. Using conversions from Google Analytics or offline conversions as your conversion source is not the primary requirement; enhanced conversions specifically augment Google Ads Conversion Tracking.