The broadcast stack, explained before it is sold.

Three guides, one layer each: the machinery that runs a channel, the business model most new channels launch on, and the cue standard that decides whether the ad money is automated. A fourth walks a new channel from empty to on air, and three more are for the buying decision: the questions to put to any provider, how playout software is sold, and whether you want it managed or self-serve. Every guide stands alone and names its terms, so a vendor pitch, ours included, can be read with the jargon already decoded.