What Does Narrowcast Mean?

A narrowcast or narrowcasting is the process of sending specific data to a limited, selected or narrower number of recipients. It enables restriction the transmitted data to be delivered only to selected individuals, organizations, devices and/or equipment.


A narrowcast also may be referred to as a multicast.

Techopedia Explains Narrowcast

A narrowcast primarily enables segmenting and categorizing the data transmission on a specific network or communication environment. The most common example of narrowcast is employed by cable TV operators that send cable TV signals only to the homes of their subscribers.

Narrowcasting is also implemented in Internet and networking technologies. For example, access to a private server is restricted and broadcast to only selected employees or users. Similarly an email message can be sent only to a narrow list of recipients.


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Margaret Rouse

Margaret Rouse is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical, business audience. Over the past twenty years her explanations have appeared on TechTarget websites and she's been cited as an authority in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine and Discovery Magazine.Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages. If you have a suggestion for a new definition or how to improve a technical explanation, please email Margaret or contact her…