How Publishers Sell Ad Inventory: Direct Deals, Ad Networks and Programmatic Exchanges

As a product manager working on advertising products at Rakuten, explain the main ways a publisher earns money from its ad inventory. For each one, describe how it works, how the price is set, and why a publisher would choose it. ```hint Order by how the sale happens Line the options up from deals a salesperson negotiates to impressions an automated auction sells one at a time. For each, ask who the buyer is, who sets the price and how much control the publisher keeps. ``` ### Clarifying Questions - What kind of publisher should I assume: a content site or app, a retailer selling ads on its own marketplace, or a site that also earns through affiliate links? - Should the answer stay with selling ad impressions, or also cover adjacent models such as sponsorships and affiliate commissions? - Do you want a survey of the options, or also a recommendation for how a particular publisher should combine them? ### What a Strong Answer Covers - The main sales channels, from negotiated deals to fully automated auctions, with how each one works step by step. - The pricing models in use and who carries the performance risk under each. - The systems each channel relies on, on the publisher side and the buyer side, and how an impression passes between them. - Trade-offs between yield, fill rate, control over who advertises, data leakage and operating cost. - How a publisher combines channels so they compete for each impression rather than being called in a fixed order. ### Follow-up Questions - Why did many publishers move from a waterfall to header bidding, and what did that change cost them? - How does the loss of third-party cookies change the relative value of direct deals, private marketplaces and open-auction inventory? - How should a retailer with first-party shopper data sell ads on its own site differently from a news publisher?