From Bartering to Algorithms
- Jun 3
- 7 min read
How Sales and Marketing Evolved Together …and Apart
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Sales and marketing have evolved alongside the wider history of commerce, from ancient barter to today’s AI-mediated, word-of-mouth-driven markets. The eras of sales, branding, marketing, and product innovation are staggered and overlapping rather than cleanly sequential, which is why they keep colliding in today’s internal debates about “who drives growth.” And why is there so much frustration between two teams that share the same goal?
There is no chicken or egg debate here: before anything called marketing existed, people were already selling. In early agrarian societies, traders bartered grain, tools, and livestock in markets where the essentials of selling, such as spotting demand, framing an offer, and negotiating terms, were already in place, even without money. As metal coins and standardized currencies took hold, sales became a recognizable function, with certain people specializing in traveling between towns, managing inventories, and turning conversation into transactions.
Marks of ownership to early brands (ca. 1500–1800)
Marketing, in contrast, arrived later. For centuries, what would now be called branding was literally a mark of ownership, such as a symbol burned into cattle or carved into amphorae so buyers could see who produced a good and hold someone accountable if it failed. Those marks said nothing about lifestyle or aspiration and simply answered a practical question: “Whose goods are these, and are they trustworthy?”
During the early modern period and into the Industrial Revolution, those primitive marks evolved into brand names on crates, barrels, and packaging. As production scaled and identical products began traveling hundreds of miles by ship or rail, symbols on a wooden box or tin became a silent salesperson, assuring distant buyers that the flour, soap, or tools inside came from the same source that had satisfied them before. This is where the image of “HBC” stenciled on a shipping crate fits, a visual shorthand for Hudson’s Bay Company and a sign of reliability in a world where the manufacturer was often an abstraction.
Product identity and the birth of marketing (ca. 1800–1900)
By the 19th century, brand identity began to move beyond a burned symbol or stamped name. Manufacturers experimented with distinctive colors, typefaces, mascots, and slogans, such as John Deere’s particular shade of green, not because anyone had written a theory of brand equity but because farmers could recognize “their” tractor from a distance. Branding was still functional, signaling that a machine was robust or that a packaged food was safe and consistent rather than promising that the product expressed someone’s identity.
At the same time, something recognizably like marketing started to emerge. As literacy rose and print media expanded, companies bought space in newspapers, sponsored demonstrations, and staged events to amplify word of mouth beyond the reach of a single town. Salespeople still closed the deals, yet they increasingly walked into conversations shaped by what prospects had already read, heard, or seen.
Democracy, mass media, and campaigns (ca. 1850–1930)
Democracy added a new pattern that marketers eagerly copied, the political campaign. Politicians traveling from town to town, making speeches, posting handbills, and building coalitions provided a template for coordinated message delivery over time and space. The language of campaigns, targets, and swing voters migrated into commerce as companies realized they were also trying to persuade large, diverse populations with limited resources.
As the 19th century gave way to the 20th, technology amplified this campaign mindset. The printing press was no longer a novelty, so newspapers, magazines, and catalogs became dense with advertisements that blended product information with narrative and emotion. A day at the market might include a candidate’s stump speech followed by a soap demonstration in the town square, two different sellers using the same persuasive toolkit. “Vote for Harrison. He’s alright!” would be followed by a P&G salesman at a trough shouting, “Ivory Soap. It Floats.”
From product focus to the marketing department (ca. 1900–1970)
From roughly 1900 through the mid 20th century, marketing remained mostly product-centered. Companies emphasized quality, safety, and novelty while print and events carried messages further than personal networks alone ever could. Sales teams still lived close to the customer, listening for objections and closing deals one relationship at a time.
Then radio, television, and later the early internet arrived and the balance shifted. Communication channels multiplied, audiences fragmented, and the cost of a poor message escalated. Firms responded by formalizing marketing as a distinct profession, hiring specialists, building research departments, and turning to agencies that could handle creative, media buying, and strategy at national and global scale. This is the Madison Avenue period, the rise of the agency as interpreter between product makers, sales forces, and the mass public
Throughout this window, marketing moved from a reinforcer of quality and credibility to ensuring there was relevancy between the product or service’s value proportion and audience needs. We also saw an increase in highlighting the experience of using a product, not just demonstrating how it worked. Near the end of this era, differentiation was added to credibility and relevance as central to marketing’s role. But differentiation was never a driver. Particularly different for the sake of being different. Being relevant or more relevant was always critical. But the concept of differentiation without relevance plagues underperforming marketing teams today.
War, government contracts, and demand shocks (1930s–1950s)
The Milton Hershey story shows how sales, product, and institutional relationships can reshape demand. In the late 1930s, Hershey’s team worked with the United States Army to develop the high calorie “Ration D” bar, designed to withstand heat, travel, and rough handling in soldiers’ packs. Winning that government contract turned a regional chocolate maker into a strategic supplier.
Between 1940 and 1945, millions of service members encountered Hershey chocolate as part of their daily rations. When those soldiers came home, they remembered Hershey by name, giving the company a massive experiential brand campaign effectively underwritten by the war effort. In miniature, this shows how a single sales win, anchored in product quality and logistics, can generate downstream demand for decades. It was the sales teams from Coca Cola, Harley Davidson, and Wrigley who won critical government contracts prior to WWII that put their products in the hands of millions of soldiers who wanted those products upon return. The marketing function played a massive role in growing those businesses when they returned from war, but it was set in motion by a great product, reliable production, and a talented sales team landing the government deal.
The era of marketing power (ca. 1970–2010)
In the late 20th century, marketing often sat between product and sales and orchestrated growth. The toolkit expanded to include television, direct mail, telemarketing, trade shows, sponsorships, and eventually digital channels such as search, display, and email. Companies built sophisticated brand architectures, segmentation schemes, and funnel models, while agencies grew into global networks and marketing budgets became one of the largest discretionary line items in the enterprise.
John Sculley rose out of marketing to become the president of Pepsi, and he replaced Steve Jobs as the CEO of Apple in 1983. That is right: a CPG marketer once ran Apple, and Apple’s board was excited at the time to bring him on. The prevailing belief was that Apple had a marketing problem. Jobs would not return for fourteen years. Some might argue that 1990 was the apex of the CMO’s stature. The return of Jobs marks the moment when the world began to realize that product comes first, followed by marketing, never the other way around. In some industries, they are still coming to terms with that.
This era rewarded marketers who could manage complexity. A strong product and a strong marketing engine could make average sales teams look exceptional because demand arrived prequalified and presold. It was also the era when some sales teams drifted into order taking, benefiting from brand halo and inbound volume without needing to originate much demand themselves.
Algorithms, peers, and compressed discovery (ca. 2010–present)
The last decade has not reduced the need for marketing but has changed where and how it works. Search engines, social platforms, and recommendation systems now determine what people see long before a brand’s own website or ad unit has a chance. Word of mouth still matters, yet it rides on digital rails so that a single review, post, or peer to peer message can reach thousands in hours rather than dozens over months.
At the same time, many of the tools that once required large agencies or teams, including creative production, media management, and analytics, are available as inexpensive software and AI services. A small team or even a solo founder can now run global campaigns from a laptop that would have required floors of specialists in the 1980s. Those same algorithms increasingly down rank overt corporate content and privilege peer content, niche communities, and conversational interfaces where paid messages have little room to appear.
What endures: humans, product, and a supporting role for marketing (all eras)
Beneath all this technological change, markets still run on people deciding whether they trust other people and the products they stand behind. Buyers listen first to peers, colleagues, and frontline experts, and the digital environment simply moves those human to human opinions farther and faster than any one campaign ever could. A product can be praised or punished by thousands of customers in real time, and that collective verdict is difficult to spin.
In that environment, the center of gravity returns to two core responsibilities. Product leaders must build and refine offerings that genuinely solve problems and stand up to scrutiny in open, always on conversations. Sellers must do the hard work of discovery, diagnosis, and guidance, turning generic interest into face to face trust rather than waiting for a stream of prequalified leads to appear.
Marketing still matters, though no longer as the star of the show. Its role looks more like orchestration and enablement, making sure the story is coherent, equipping sellers with the right narratives and proof, and helping customers find accurate information quickly when they go looking. When those pieces are in place, marketing amplifies the reality of a strong product and a disciplined sales motion instead of trying to manufacture demand that the product and the people cannot sustain.
Viewed through this lens, the modern era is less a revolution than a return. The market again behaves like an enormous, accelerated town square where good products, sold by capable humans, earn reputations that compound and where weak products and passive sellers are exposed just as quickly. Blaming marketing for that dynamic is misplaced, because in a world of instantaneous peer feedback, the function can no longer carry the weight of broken offerings or reluctant sales teams. A CFO once only knew of a certain accounting vendor from ads in a trade publication. Then she could use Google and see what came up organically or in a paid ad. Now she just asks her network on LinkedIn or has a conversation with ChatGPT. If the community does not have great things to say about your product or how your pitch team showed up, and you do not get a lead out of that, blaming marketing is unfair. But if your marketing team does not understand how the game is played today, it is not without blame either.
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