Every second, what do DSPs evaluate?

The correct answer centers around the variability of DSP operations. Demand-Side Platforms (DSPs) are sophisticated systems that process vast amounts of data in real time, and their evaluations can differ based on individual strategies, algorithms, and settings that each DSP employs. While some DSPs might prioritize evaluating the total number of impressions, the quality of ad placements, or bids from advertisers, the exact focus can vary significantly depending on the DSP's objectives and the specific campaign being executed.

For instance, some DSPs might focus on bid strategies to optimize for cost-effectiveness, while others may assess ad placement quality to enhance user engagement or brand safety. Therefore, saying that it depends on the DSP comprehensively encapsulates the reality of how these platforms operate within their unique frameworks. This reflects the diverse landscape of programmatic advertising, where different DSPs cater to various advertiser needs and performance metrics.