Event-level records from a DSP or SSP, one row per bid, impression, click, or conversion, with prices and identifiers. Log-level data is the raw material for independent measurement, supply path analysis, and fee audits, and access to it is worth writing into DSP contracts.
Related terms
Cite this entry:
Agency Echelon. "Log-Level Data." Agency Echelon Reference, reviewed September 2026. https://agencyechelon.com/reference/glossary/log-level-data/