"Google has extended its Universal Commerce Protocol checkout into ad campaigns for the first time, putting in-ad purchase inside Shopping ads on YouTube and Direct Offers Demand Gen campaigns. Google will roll the UCP-powered checkout to Canada and Australia in the coming months, with the U.K. to follow. Affirm and Klarna buy-now-pay-later options are now embedded directly into Google Pay for UCP transactions, closing a gap with the BNPL flows already available inside Amazon, Apple Pay, and PayPal checkout."