narrowcasting
noun
nar·row·cast·ing ˈner-(ˌ)ō-ˌka-stiŋ 
ˈna-(ˌ)rō-
: radio or television transmission aimed at a narrowly defined area or audience (such as paying subscribers)
Example Sentences
Recent Examples on the Web Otherwise, the point of narrowcasting becomes pointless. 
Yogesh Shah, Forbes, 27 Jan. 2022 Modern narrowcasting examples include: • YouTube channels. Yogesh Shah, Forbes, 27 Jan. 2022
Yogesh Shah, Forbes, 27 Jan. 2022 Modern narrowcasting examples include: • YouTube channels. Yogesh Shah, Forbes, 27 Jan. 2022 Word History
First Known Use
1932, in the meaning defined above