First opus of a collection directed by Professor Ghislaine Azémard, the book 100 notions for crossmedia is intended for communications and marketing professionals and students in the broad sense but also for those active in digital development and intent on delving into the latest trends and uses.. The interdisciplinary nature of this work makes it accessible and pertinent for readers of various training and expertise, social sciences, graphic arts, IT development and communication materials. The encyclopedia is built like an intersectorial vademecum for those involved in digital issues, changing traditional media and editorial strategies of emerging strategies. It consistently addresses the structural concepts of new communication uses, particularly crossmedia, social networks, virality, copyright, profiling, touchscreens, connected (smart) television and communicating objects. It is structured using a horizontal application vision that facilitates interdisciplinary and international collaboration.. This work meets the needs of those intent on sharing a common base of international knowledge to be pragmatically used in exercising various professions. This initiative is organized based on a logic that is itself crossmedia and based on a collaborative scientific platform: www.100notions.com (French, English and Chinese versions).. The purpose of this work and its coordinated digital complements is to provide a scientifically cohesive tool, which presents a conceptual map corresponding to the reorganization of media defined..