Broadcasting syndication is the licensing of the right to broadcast television programs and radio programs by multiple television stations and radio stations, without going through a broadcast network. It is common in the United States where broadcast programming is scheduled by television networks with local independent affiliates. Syndication is practiced less in the rest of the world, as most countries have centralized networks or television stations without local affiliates; although less common, shows can be syndicated internationally. The three main types of syndication are "first-run syndication", which is programming that is broadcast for the first time as a syndicated show and is made specifically to sell directly into syndication; "off-network syndication", which is the licensing of a program that was originally run on network TV or, in some cases, first-run syndication (colloquially called a "rerun"); and "public broadcasting syndication".
When syndicating a show, the production company, or a distribution company called a syndicator, attempts to license the show to one station in each media market or area, or to a commonly owned station group, within the country and internationally. If successful, this can be lucrative, but the syndicator may only be able to license the show in a small percentage of the markets. Syndication differs from licensing the show to a television network. Once a network picks up a show, it is usually guaranteed to run on most or all the network's affiliates on the same day of the week and at the same time (in a given time zone, in countries where this is a concern). Some production companies create their shows and license them to networks at a loss, at least at first, hoping that the series will succeed and that eventual off-network syndication will turn a profit for the show. A syndicated program is licensed to stations for "cash" (the stations purchase the rights to insert some or all of the advertisements at their level); given to stations for access to airtime (wherein the syndicators get the advertising revenue); or the combination of both. The trade of program for airtime is called "barter".