It's a pilot card called Customer Journey Insights, for eligible advertisers only. If your account qualifies, it shows by default on the Overview Home page. You can also add it to any Custom view.
Two tabs:
Customer journey: unique users who interacted with your campaigns before and after your ad ran, across Unaware, Aware, Consider and Act
User actions: how many leading actions happened in each stage, like branded searches or add to cart
It only works for Performance Max, Search and Shopping campaigns. Ads must run on Search, Shopping, Discover Feed or YouTube (within PMax). Otherwise the card stays hidden.
Via Barry Schwartz.
