Commercial broadcasting refers to the transmission of television and radio programs funded primarily through advertising revenue. This model allows broadcasters to offer content to the public at little or no cost, as advertisers pay to reach audiences. The goal is to attract large viewership to maximize ad sales. In many countries, commercial broadcasting operates alongside public broadcasting, which is funded by government support or viewer subscriptions. Major networks, such as NBC, CBS, and ABC in the United States, exemplify commercial broadcasting, producing a variety of shows, news programs, and sports events to engage diverse audiences.