Julien Rosanvallon

A graduate of Magistère in Management Science from Dauphine University and a Master's degree from IEP Paris, Julien Rosanvallon started his career at Orange Advertising as Head of Research. He joined Médiamétrie in 2003 as Director of the Médiamétrie//NetRatings subsidiary. In 2011, he became head of Médiamétrie's TV department and in 2016, he also became head of the Internet department. At the end of 2018, Julien Rosanvallon was appointed Executive Director of TV and Internet at Médiamétrie. In 2020, he became Deputy CEO in charge of Audience Measurement Audience Measurement Quantitative study of the frequency of use of media. Find out more , and since 2026, he has also overseen Médiamétrie’s international operations. He is the author of three books on media, measurement, and digital digital A signal is said to be digital if it can be represented by a series of discrete values that can be coded in binary as either 0 or 1. It is the opposite of analogue signal. Digital broadcasting has become the primary mode for television broadcasting, whether by cable, satellite, or even terrestrial. Find out more technology, including “La Mesure des Médias” (Media Measurement), published in 2025 by Editions Economica.