How advertising became an industry

A long history of public messages

Advertising is the organised communication of information and persuasion about goods, services, ideas or public causes. Its forms have changed dramatically, yet it has consistently depended on available media, commercial networks and audiences able to compare competing messages.

From public announcements and shop signs to newspapers, radio, television and online platforms, advertising developed alongside systems for producing, distributing and reading information. The modern industry is not one invention or one country’s achievement; it is the result of many connected changes in printing, trade, urban life and communications technology.

Early forms: signs, notices and print

Long before specialist agencies existed, traders used signs, spoken announcements and written notices to make their goods known. In busy towns, visual symbols could identify an inn, craft workshop or merchant to people who did not share the same language or level of literacy. These local practices were direct and limited by place.

Printing gave promotional messages a much wider reach. By the seventeenth and eighteenth centuries, newspapers, handbills and trade cards created regular spaces where sellers could announce stock, services, arrivals and auctions. Print made messages repeatable and allowed readers to encounter commercial information alongside news and commentary.

Expansion in the nineteenth century

Industrial production, expanding transport networks and growing urban markets gave firms more goods to promote across larger areas. Newspapers and magazines became important advertising channels because they could carry regular messages to defined readerships. Illustrations, distinctive type and carefully arranged copy helped advertisements compete for attention on crowded pages.

During this period, intermediaries began buying and arranging newspaper space for clients. These businesses gradually took on more responsibilities, including planning, copywriting and visual presentation. The advertising agency emerged as a specialist organisation connecting advertisers, publishers and audiences.

• Seventeenth–eighteenth centuriesPrinted notices, newspapers and trade cards expand the reach of local commercial messages.
• Nineteenth centuryMass production, urban markets and periodical publishing support the growth of advertising space and specialist intermediaries.
• Early twentieth centuryAgencies increasingly coordinate research, writing, artwork and campaign planning for clients.
• Broadcast eraRadio and television make sound, performance and moving images central tools for reaching large audiences.
• Digital eraSearch, websites and networked platforms enable fast distribution, measurement and more tailored communication.

Campaigns and mass media

In the early twentieth century, advertising agencies became more closely associated with complete campaigns rather than isolated placements. A campaign could coordinate a central idea across newspapers, magazines, posters and other outlets. Research about audiences and purchasing habits also gained influence, although methods and standards have changed over time.

Radio brought voice, music and scheduled programming into advertising. Television added moving images and domestic viewing routines. Both media required advertisers to consider timing, sponsorship, production and the relationship between a message and its programme environment. Large national campaigns became more familiar, while local businesses continued to rely on regional and print outlets.

Digital communication and continuing principles

Computer-based communication added new ways to publish, search for and respond to promotional material. Websites, search results, email and mobile devices made advertising more immediate and measurable. Digital systems also raised important questions about privacy, transparency, targeting and the distinction between editorial material and paid promotion.

Despite the change in tools, several longstanding principles remain familiar: identify an audience, make a proposition understandable, choose an effective medium and assess the response. The history of advertising therefore offers a useful lens on the wider history of media, business and public communication.

What this history helps explain