This paper proposes and develops a model of audience evolution. The concept of audience evolution in this case refers to the notion that the dominant framework employed by media industry stakeholders (content producers, distributors, advertisers, media buyers, etc.) to conceptualize the audience evolves in response to environmental changes. These environmental changes primarily involve technological changes that simultaneously transform the dynamics of media consumption as well as the dynamics of gathering information on various dimensions of audience behavior. These technological changes also interact with one another, in that the technological changes that affect the dynamics of media consumption also simultaneously provide new means of g...