Google details how its on-Google checkout works | MarTech

"The new documentation breaks down how UCP and its UCP-powered checkout enable a native Buy button that keeps the entire transaction on Google properties. The merchant remains the seller of record, but the checkout experience happens natively within Google. To activate the feature, merchants must implement the native_commerce attribute in Merchant Center."

"By shifting checkout directly onto Google surfaces, UCP reduces the friction between product discovery and purchase. That is particularly important in AI-driven environments like Gemini and AI Mode, where the goal is to compress the path from question to transaction. The fewer clicks and redirects, the higher the potential conversion lift."

"Google is centralizing checkout while maintaining the legal and operational distinction that merchants remain the seller of record. That allows Google to tighten control over the transaction experience without fully disintermediating retailers. From a commerce perspective, this is about control of the moment of purchase."

Google has published documentation for its Universal Commerce Protocol (UCP), which enables native checkout experiences directly on Google properties. Merchants must implement the native_commerce attribute in Merchant Center and ensure payment processors support Google Pay tokens. This represents a significant shift in commerce infrastructure, not merely a UI change. UCP reduces friction between product discovery and purchase, particularly in AI-driven environments like Gemini. The checkout experience occurs natively within Google while merchants retain seller-of-record status. This centralizes the transaction moment on Google's platform while maintaining legal distinctions, fundamentally changing how marketers approach the sales funnel and brand-owned sites.

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