For a long time, buying OEM traffic looked very different from buying media on traditional ad exchanges. If you wanted access to on-device advertising inventory, the process usually involved direct negotiations with OEM partners, manual insertion orders, and campaign management through account managers. However, the landscape is changing quickly. Over the past two years, many Android manufacturers have started opening their ecosystems to programmatic buying and real-time bidding (RTB). This shift is transforming how advertisers access OEM placements and is gradually integrating device-level inventory into the broader programmatic advertising ecosystem. For UA teams, this means OEM traffic is becoming easier to scale, automate, and optimize using the same technology stack already used for other programmatic channels. Why Programmatic Is Entering the OEM Ecosystem The main driver behind programmatic OEM advertising is the need for efficiency and scalability in mobile user acquisition. As advertisers increase spending on Android growth, manual buying models become difficult to scale across multiple device manufacturers. Programmatic technology solves this challenge by allowing advertisers to purchase inventory through automated auctions instead of direct negotiations. In a real-time bidding environment, each ad impression is sold through an automated auction where demand-side platforms (DSPs) evaluate the value of the impression and place bids instantly. Modern OEM advertising platforms are now adopting OpenRTB standards, particularly the OpenRTB 2.5 specification, which is widely used across digital advertising exchanges. This allows OEM inventory to communicate with DSPs and programmatic infrastructure in a standardized format. As a result, advertisers can access on-device placements using the same tools they already use for programmatic media buying. How Real-Time Bidding Works in OEM Advertising In a programmatic OEM environment, the process follows a familiar structure used across digital advertising. When a user interacts with an OEM surface, such as a system recommendation panel or device setup screen, the system generates an ad request. This request contains information about the device, location, placement type, and other targeting signals. That request is then sent to an exchange where multiple advertisers can participate in an auction. Demand-side platforms evaluate the opportunity and submit bids based on targeting criteria and campaign goals. The highest bid wins, and the advertisement is delivered to the user. Because this process happens in milliseconds, advertisers can dynamically adjust their bids depending on user signals and predicted conversion value. Which OEM Ecosystems Support Programmatic Buying Programmatic capabilities are still evolving across the OEM ecosystem, but several major vendors have already started supporting real-time bidding access to on-device inventory. Examples include: Xiaomi (Mi Ads) Xiaomi has introduced RTB support through exchange integrations that allow advertisers to bid programmatically on placements across its ecosystem. OPPO and vivo ecosystems These vendors have opened APIs that allow demand-side platforms to connect directly to their ad inventory through real-time bidding frameworks. Transsion (Eagllwin platform) Transsion’s advertising ecosystem has started experimenting with programmatic access, with beta implementations designed to support formats such as interstitial and rewarded placements. As more OEM partners adopt standardized bidding protocols, the gap between OEM advertising and traditional programmatic media buying is rapidly shrinking. New Advertising Formats Available for Programmatic OEM Buying Programmatic access to OEM ecosystems is unlocking a variety of device-level ad formats that were previously only available through direct deals. Some of the most important formats include: Setup wizard placements Ads that appear during the initial configuration of a smartphone, when users install essential apps. OEM app store promotions Sponsored placements inside manufacturer app stores, such as featured listings or search ads. System recommendation feeds App suggestions displayed in folders like “Hot Apps” or “Recommended Apps.” Lock-screen and push placements Notifications or lock-screen promotions that introduce apps to users directly through the device interface. Native discovery units inside system apps Inventory within built-in applications such as browsers, file managers, or device assistants. Because these formats appear directly within the device interface, they often deliver high engagement and strong install conversion rates compared with traditional display inventory. Why Programmatic OEM Buying Matters for UA Teams The introduction of programmatic buying into OEM ecosystems has several important implications for mobile marketers. First, it dramatically reduces the operational complexity of running OEM campaigns. Instead of negotiating separate deals with each manufacturer, advertisers can access multiple OEM inventories through a single programmatic interface. Second, real-time bidding enables algorithmic optimization. Machine learning models can adjust bids dynamically based on predicted install rates, post-install behavior, or lifetime value signals. Third, programmatic access improves transparency and measurement. Standardized protocols allow advertisers to verify device identifiers, placement types, and supply chains, which helps reduce fraud and improve campaign reporting. Together, these improvements make OEM traffic more compatible with modern performance marketing workflows. The Future of Programmatic OEM Advertising The adoption of programmatic technology is likely to accelerate over the next few years as more OEM vendors integrate their ecosystems with ad exchanges and DSP infrastructure. Several trends are already shaping this evolution: As these systems mature, OEM inventory will increasingly behave like other programmatic supply sources. The difference is that it still retains one key advantage: direct access to users inside the smartphone environment. Conclusion Programmatic technology is gradually transforming how advertisers access OEM traffic. What was once a manually managed channel is evolving into a real-time, automated advertising ecosystem where on-device placements can be bought through the same infrastructure used across digital media. For user acquisition teams, this change opens the door to scalable and data-driven access to OEM advertising inventory across multiple Android ecosystems. As more device manufacturers adopt real-time bidding frameworks, programmatic OEM advertising is likely to become a core component of the mobile growth stack.