Based on the possibilities of the “relational aesthetics” estabished by Nicolas Bourriaud, this article discusses the transformations of the Performing Arts in the 20th century as a result of the emergence of both the new media and the communication technologies, and the search for its specificity. Faced with the initial logic of confrontation with media procedures, the theatre has subsequently chosen between imitation and pollution. After briefly reviewing the wide phenomenology of technotheatres as an expression of the emerging languages in the Digital Age, it is stated the significant impact of what Erika Fischer Lichte called “the performative turn”.