An advertiser wants to future-proof their measurement and gain click-through conversion data for opted-in users. Which tagging implementation is required for enhanced attribution?

For enhanced attribution , Google requires the Google tag implementation, specifically gtag.js , for Floodlight measurement. Google states that using the Google tag improves conversion measurement and that if iframe or image tags are used instead, Google Marketing Platform cannot observe all conversions. The Display & Video 360 documentation also explicitly says to enable Enhanced attribution when setting up the Floodlight configuration to get improved conversion tracking benefits. That is why gtag.js is the required tagging method when the goal is stronger click-through conversion measurement for opted-in users. Google Help+1