From Broadcast to Narrowcast to No-Cast

Marketing distribution has gone through three structural eras in the last hundred years. Broadcast — one-to-many — ran from roughly 1920 to 1995. Narrowcast — one-to-segment — ran from roughly 1995 to 2023. The third era, which most of the industry has not yet named, is starting now. We call it no-cast — one-to- question — and it is the era in which the brand is summarised, cited and recommended by an AI assistant in response to a user question the brand never sees. Each era required a different operating model. The no-cast era will be no exception.

1. Broadcast: 1920–1995

Broadcast was the era of the one-to-many transmission. A radio network or a television network compressed an enormous audience into a single moment, and a brand bought a slot inside that moment. The dominant skills were creative — you had thirty seconds, in front of millions, to produce a memorable narrative — and media-buying — you had to know which slot, on which network, reached which audience. The Mad Men archetype, which we unpack in The Mad Men to Machine Men Shift, was the operating expression of the broadcast era. Both halves of the job — make the artefact, buy the slot — were specialist crafts requiring senior human judgement.

2. Narrowcast: 1995–2023

The narrowcast era began with the banner ad in 1994 and reached operational maturity around the 2010s, when programmatic media buying, social audience targeting, and behavioural retargeting converged. The cast was no longer 'everyone watching this slot'. It was 'this individual, on this device, in this moment, with this inferred intent'. The dominant skills changed: from creative narrative to performance optimisation, from slot-buying to audience-building, from broadcast measurement (reach, GRPs) to narrowcast measurement (CPC, ROAS, CPA). The org chart changed with the skills. By 2018, the typical UK marketing team had more analysts than copywriters.

The narrowcast era also produced the 'one-to-one personalisation' promise that the industry repeated for twenty years. In honest terms, that promise was mostly oversold. Narrowcast was one-to-segment, not one-to-one. The targeting was getting better — but the artefact at the end of the targeting was still produced in batches by a creative team and slotted into a finite library. Genuine one-to-one personalisation required a third compression.

3. No-cast: 2023–

The no-cast era is the moment when the brand stops controlling the surface where its message appears. The user types a question into an AI assistant. The assistant retrieves, ranks, summarises and personalises an answer. The brand may or may not be cited inside that answer. The brand may or may not be recommended. The user may or may not click through. By the time the brand sees any signal at all, the conversation has happened, the decision is partway made, and the brand was not in the room.

This is not a hypothetical future. It is the operational present. Around 38% of UK consumer information journeys in Q2 2026 already include at least one assistant query before purchase. That number was below 5% two years ago. The structural shift is happening at a pace that surprises even the operators living inside it. We track the empirics in the UK Google AI Overviews Traffic Impact Tracker and the UK ChatGPT & Perplexity Referral Tracker.

4. The dominant skills of the no-cast era

Just as broadcast required creative-and-media-buying and narrowcast required performance-and-targeting, the no-cast era requires its own skill stack. Six skills are emerging as the dominant ones, on our 2026 operating data:

1. Generative Engine Optimisation (GEO). Designing content, schema and citation structure so that AI assistants retrieve, rank and cite the brand. The 2026 successor to SEO, unpacked in SEO in the GEO Era.
2. Brand authority signalling. Building the third-party citations, expert quotes, structured author markup, and earned media that AI assistants weight when deciding who to cite.
3. Semantic density. Writing content that contains the user's question explicitly, with the answer immediately adjacent, in a structure machines can parse cleanly.
4. Citation measurement. Tracking the brand's share of citations across the major assistant surfaces, by category and by query type, as a leading indicator.
5. Conversation-mediated funnel design. Designing the post-citation user journey to recover and convert higher-intent traffic that arrives already partly informed.
6. AI-native CRM and lifecycle. Recognising that the user who arrives via an assistant is at a different funnel stage than the user who arrives via paid social, and treating them accordingly.

5. The measurement question

In broadcast, the measurement KPI was reach. In narrowcast, it was conversion. In no-cast, the upper-funnel KPI is increasingly citation share — the proportion of category-relevant assistant answers that mention the brand. This is harder to measure than reach (which platforms report) or conversion (which the brand owns), because the assistant surfaces are opaque and the answer varies by user. But it is measurable, with the right instrumentation, and it is the leading indicator that distinguishes the brands compounding faster from the brands compounding slower.

6. The operating-model question

Each era required its own operating model. Broadcast required the agency-of-record, the brand team, and the media-buying network. Narrowcast required the in-house performance team, the analytics stack, and the agile creative pod. No-cast requires something different again: a content-and-citation engine that produces semantically dense, schema-rich, third-party-cited brand authority at scale, paired with an AI-mediated funnel-recovery layer. We describe the agency operating model implications in The Death of the Marketing Agency (As We Know It).

7. What does not change

Two things do not change across all three eras. First, the brand that is recognisable, distinctive, and trusted wins more attention than the brand that is not — in broadcast, narrowcast, and no-cast equally. The case for brand investment in the no-cast era is, if anything, stronger than in either previous era, because the assistant's tendency is to cite recognisable authorities. Second, the customer who feels respected by the brand returns more often than the customer who does not. Ogilvy was right about this in 1962, narrowcast did not change it, and no-cast does not change it either. The medium changes. The durables hold.

Suggested citation: Javed, Kasim. From Broadcast to Narrowcast to No-Cast. Creative Marketing Group, April 2026. Available at creativemarketingltd.co.uk/from-broadcast-to-narrowcast-to-no-cast.