Against a backdrop of transition, marked by the launch of a tender in January 2026 for the redesign of Internet audience measurement, CESP is publishing a simplified audit report on the Internet Global measurement system. The audit focuses on the fundamentals of the current measurement system, as well as on the technical and methodological directions for the future industry standard.
Discover the latest findings from CESP on the 2025 Internet Global audit
CESP has sent Nielsen and Médiamétrie its audit report on the Digital Ad Ratings (DAR) solution. This audit was carried out at the request of CESP’s internet, television and press committees. It covers the period from March 2024 to March 2025, solely within the scope of the Open Web.
CESP considers that DAR offers the indistry an industrialised solution based on relevant methodological principles such as the use of an ID Graph and the integration of local third-party data. However, further developments are needed to take full advantage of the integration of local data providers and to enhance the robustness and accuracy of the results.
Discover the latest findings of CESP on Nielsen’s Digital Ad Ratings (DAR) solution.
CESP welcomes Médiamétrie’s efforts to keep up with technological developments and to ensure the most comprehensive coverage possible of the measurement universe, that is, the population of Internet users.. The fast-changing Internet usage, continuous innovations in devices and operating systems, and and the growing complexity of associated modeling (TikTok, app usage on Apple, etc.) make audience measurement increasingly challenging.
Discover the lastest CESP conclusions
CESP notes that the methodology of the system has stabilised, although it still faces measurement difficulties linked to ongoing and growing technological developments in the universe to be studied. The main change is the new establishment survey used to calculate the theoretical figures of Internet users on the various screens, with the launch of the same establishment survey for both television and Internet audience measures.