Multiplex (television) in the context of "Digital subchannel"

Home Box Office (HBO) is an American premium television network and service, which is the flagship property of namesake parent-subsidiary Home Box Office, Inc., itself a unit owned by Warner Bros. Discovery. The overall Home Box Office business unit is based at Warner Bros. Discovery's corporate headquarters inside 30 Hudson Yards in Manhattan. Programming featured on the service consists primarily of theatrically released motion pictures and original television programs as well as made-for-cable movies, documentaries, occasional comedy, and concert specials, and periodic interstitial programs (consisting of short films and making-of documentaries).

HBO is the oldest subscription television service in the United States still in operation, as well as the country's first cable-originated television content service (both as a regional microwave- and national satellite-transmitted service). HBO pioneered modern pay television upon its launch on November 8, 1972: it was the first television service to be directly transmitted and distributed to individual cable television systems, and was the conceptual blueprint for the "premium channel", pay television services sold to subscribers for an extra monthly fee that do not accept traditional advertising and present their programming without editing for objectionable material. It eventually became the first television channel in the world to begin transmitting via satellite—expanding the growing regional pay service, originally available to cable and multipoint distribution service (MDS) providers in the northern Mid-Atlantic and southern New England, into a national television service—in September 1975, and, alongside sister channel Cinemax, was among the first two American pay television services to offer complimentary multiplexed channels in August 1991.

Showtime (also known as Paramount+ with Showtime) is an American premium television network and the flagship property of Showtime Networks, a sub-division of the Paramount Media Networks division of Paramount Skydance Corporation. Launched on July 1, 1976, Showtime's programming includes original television series produced exclusively for the linear network and developed for the co-owned Paramount+ streaming service, theatrically released and independent motion pictures, documentaries, and occasional stand-up comedy specials, made-for-TV movies, and softcore adult programming.

Headquartered at Paramount Plaza in the northern part of New York City's Broadway district, Showtime operates eight 24-hour, linear multiplex channels and formerly a standalone traditional subscription video on demand service; the channel's programming catalog and livestreams of its primary linear East and West Coast feeds are also available via an ad-free subscription tier of Paramount+ of the same name, which is also sold a la carte through Apple TV Channels, Prime Video Channels, The Roku Channel and YouTube Primetime Channels. (Subscribers of Paramount+'s Prime Video add-on also receive access to the East Coast feeds of Showtime's seven multiplex channels.) It is a sister premium television network to The Movie Channel and Flix.

Starz (stylized in all caps as STARZ; pronounced "stars") is an American pay-TV network owned by Starz Entertainment, and is the flagship property of Starz Inc. Launched on February 1, 1994 as a multiplex service of what is now Starz Encore, its programming consists of theatrically released motion pictures and first-run original television series. Starz operates six 24-hour, linear multiplex channels; a traditional subscription video on demand service; and a namesake over-the-top streaming platform that both acts as a TV Everywhere offering for Starz's linear television subscribers and is sold directly to streaming-only consumers.

Starz is also sold independently of traditional and over-the-top multichannel video programming distributors a la carte through Apple TV Channels and Amazon Video Channels, which feature VOD library content and live feeds of Starz's linear television services (consisting of the primary channel's East and West Coast feeds and, for Amazon Video customers, the East Coast feeds of its five multiplex channels). Starz's programming has been licensed for use by a number of channels and platforms worldwide, and the brand name is licensed by Bell Media for a companion channel of the Canada-based company's Crave premium service.