Britta wants to see how many impressions were lost at each stage of the bidding process. What feature of the Ad Exchange API would she use to get this information?

The RTB Breakout API provides detailed insights into the Real-Time Bidding (RTB) process, including the reasons why bids might not have won an impression. This allows Britta to identify where impressions were lost (e.g., filtered due to policy, outbid, or technical issues) at each stage. The Creatives API manages creative assets, not bidding diagnostics. The Marketplace API facilitates private deals and programmatic guaranteed transactions, not bid loss analysis. The Billing API handles financial transactions and reporting, not the technical reasons for impression loss during the bidding process.