Google’s Universal Commerce Protocol (UCP) marks a turning point for the tech giant. After more than two decades as a player in the hospitality sector, participating only in the initial phase of the booking process without intervening in the finalization of the transaction, it now takes a decisive step by becoming a seller as well. Users searched, Google displayed, and the transaction took place elsewhere, whether on the hotel’s website or, too often, on intermediary platforms such as Booking.com or Expedia. This long-established model is about to change structurally with the expansion of the Universal Commerce Protocol (UCP) into the hotel sector.
UCP is not a cosmetic update to Google Hotels, but a shift in architecture in the relationship between the search engine and the commercial ecosystem around it. Until now, Google’s ads and listings acted as references, generating intent but passing conversion to third parties. With UCP, Google enables transactions to be completed directly within its interfaces, including AI-powered search and the Gemini assistant.
From search engine to transactional agent
The protocol establishes a technical standard that allows a hotel’s reservation systems, its booking engine or CRS, to connect directly with Google’s AI agents. This means that a user can make a request in natural language, such as “book a double room with breakfast in Lisbon for next weekend,” and the agent can check availability in real time, apply the corresponding rates, and execute the payment via Google Pay without leaving the search environment. This is what Google calls “agentic commerce”: not just informing, but acting, and for Revenue Management and distribution teams, the implications are immediate and far-reaching.
The main obstacle to direct sales has always been friction: long forms, redirects, mobile compatibility issues, and constant comparison with OTAs, which offer smoother interfaces and established consumer trust. UCP removes much of this friction by integrating the user’s payment data, stored in Google Pay, with the hotel’s inventory in real time. The result is a purchasing experience that can be completed in two steps. Even more relevant is the scenario of “agentic user journeys.” In the new paradigm of AI-based search, the user does not interact with a list of results, but with an assistant that interprets, filters, and executes. If a hotel’s booking system is not readable by that agent, meaning it does not implement UCP, that hotel simply will not exist in this search layer.
The hotel sector has been debating for years how to reduce dependence on major distribution platforms, which take commissions of between 15 and 25 percent per booking. UCP introduces a new variable into this equation, allowing any hotel that implements the protocol to appear on Google with an instant booking option that visually competes with Booking or Expedia, but with a payment flow that, depending on how it is commercially structured, could imply a lower distribution cost. Although Google has not yet clearly defined whether UCP’s monetization model will be commission-based, cost-per-click, or a combination of both, hoteliers who adopt the protocol early will have a positioning advantage in an environment where visibility will be contested under more balanced conditions.
Risks that cannot be ignored
Adopting UCP is not without trade-offs, as there are three risk factors that any hotel company must evaluate before moving forward. When the transaction takes place within Google’s environment, the information the hotel receives about the customer may be limited. The ability to build a direct relationship with the guest and to nurture loyalty programs with first-party data will depend on the terms that Google sets for data transfer. This point is critical and still not fully defined. Google’s pricing model for UCP will determine whether this channel is more or less efficient than traditional OTAs. Current discussions point to an evolution of the Google Travel model, but without fixed conditions, hoteliers face uncertainty that must be resolved before committing integration resources. Adopting UCP also implies, to some extent, deepening dependence on Google as a technological intermediary. If the protocol becomes the dominant standard in online distribution, the hotel sector’s bargaining power with the platform could be reduced, reproducing a dynamic similar to what exists today with OTAs, but with a larger-scale player.
What to do now?
The smartest position for a hotel company at this moment is neither immediate adoption nor inaction. The first step is to engage with the booking engine or CRS provider to determine whether it is participating in Google’s UCP working groups. Technical implementation relies on these systems, and hoteliers who do not push their technology providers today may fall behind when the protocol reaches scale. The second step is to review integration with Google Pay. The UCP payment flow is built on this infrastructure, and hotels that have not enabled it will not be able to take full advantage of the protocol. The third step is to actively monitor the commercial conditions that Google announces, as these will determine whether UCP becomes a strategic complementary channel or a new source of structural dependency.
The Universal Commerce Protocol represents one of the most significant changes in online hotel distribution since the consolidation of OTAs, transforming Google from a showcase into a seller, and forcing the sector to rethink what it means to be visible in an environment where search is no longer passive, but executable. Ignoring it is not an option. The question is not whether UCP will change the rules of the game, but in what position each hotel will be when that change fully materializes.