Narrowcasting is the dissemination of information to a specialised audience, rather than to the broader public-at-large; it is the opposite of broadcasting. It may refer to advertising or programming via radio, podcast, newspaper, television, or the Internet. The term "multicast" is sometimes used interchangeably, although strictly speaking this refers to the technology used, and narrowcasting to the business model. Narrowcasting is sometimes aimed at paid subscribers, such as in the case of cable television.
Narrowcasting is the dissemination of information to a specialised audience, rather than to the broader public-at-large; it is the opposite of broadcasting. It may refer to advertising or programming via radio, podcast, newspaper, television, or the Internet. The term "multicast" is sometimes used interchangeably, although strictly speaking this refers to the technology used, and narrowcasting to the business model. Narrowcasting is sometimes aimed at paid subscribers, such as in the case of cable television.
== History and terminology== The evolution of narrowcasting came from broadcasting. In the early 20th century, Charles Herrold designated radio transmissions meant for a single receiver, distinguished from broadcasting, meant for a general audience. Merriam-Webster reports the first known use of the word in 1932. Broadcasting was revived in the context of subscription radio programs in the late 1940s, after which the term narrowcasting entered the common lexicon due to computer scientist and public broadcasting advocate J. C. R. Licklider, who in a 1967 report envisioned
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).