At university in Lima, the textbook I carried into every class was Principles of Marketing by Philip Kotler, often called the father of modern marketing. Decades and many editions later, Kotler is still in the conversation, partly because the discipline keeps changing in ways he keeps describing first. Marketing has now passed through 7 distinct eras, all of them still partly running in parallel.
What marketing is
The American Marketing Association defines it as “the activity, set of institutions, and processes for creating, communicating, delivering, and exchanging offerings that have value for customers, clients, partners, and society at large.” Deliberately broad: the entire arc from research and product design through to the post-sale relationship. Kotler puts it more practically: the science and art of exploring, creating, and delivering value to satisfy a target market at a profit. That adds what the AMA leaves implicit, the artistry, and the reality that good marketing returns more than it costs.
Seth Godin, one of the most quoted voices in the field, takes a different angle. In This Is Marketing, he writes that “marketing is the generous act of helping someone solve a problem. Their problem.” A one-line reframe of marketing as service rather than persuasion, and it sits close to how the work feels on a good day.
Three definitions pointing at the same thing. Create something valuable, tell the right people about it, help them get to it, and do it in a way that benefits everyone involved. With that as the floor, here is the arc the work itself has travelled.
7 eras
1.0 figured out how to make and move products at scale. 2.0 noticed there were people on the other end. 3.0 reframed those people as whole humans with values and meaning. 4.0 acknowledged the marketplace had moved online and was generating more data than humans could read. 5.0 asked how AI could amplify all of that for human ends. 6.0 saw that physical and digital had stopped being separate channels. 7.0 worries that AI optimisation is hollowing out the very thing it was meant to serve.
Each era is partly a correction of what the previous one missed. The labels make it sound like a software upgrade cycle. The substance is more like a hundred-year conversation a discipline has been having with itself about what it’s for.
Product era (Marketing 1.0)
The product at the centre: make enough, move it, sell it.
The first era began during the industrial revolution, when demand outstripped supply. Mass production was the breakthrough; the challenge was simply making enough. Marketing was tactical and product-focused: cheapest way to make it, cheapest way to ship it, cheapest way to push it through retail. Henry Ford’s “any colour, so long as it’s black” captures the era. You sold what you could make.
Customer era (Marketing 2.0)
The customer at the centre: differentiate, position, retain.
As competition rose, supply caught up to demand and then overshot it. Mass production became commodity production. Differentiation, positioning, and segmentation became the way to win. The goal shifted from selling to satisfying, then to retaining, because acquiring a new customer costs an estimated 5 to 7 times more than keeping one. This is the era of the 4 Ps, customer relationship management, and brand positioning as the central craft.
Most brands I’ve watched in practice are still bouncing between Marketing 1.0 and 2.0. They run a customer-segment campaign one quarter and revert to feature-led discounting the next. The basics turn out to be harder to keep doing than the new books make them sound. That’s not necessarily a failure (operating well in 2.0 is harder than it looks), but it’s worth naming.
Human era (Marketing 3.0)
The whole human at the centre: values, meaning, purpose.
Kotler’s Marketing 3.0: From Products to Customers to the Human Spirit (2010) named a shift that had been quietly building. New technologies, a post-financial-crisis loss of trust in institutions, and people’s growing appetite to express their values reframed the relationship between brand and audience. Marketing 3.0 asks marketers to see people as whole human beings: with minds, hearts, and a sense of purpose.
The tools of the moment suited that work: gamification (applying game mechanics outside games), storytelling, and the fast rise of social media. Brands that treated their audiences as collaborators started outperforming those that didn’t. The shift was real, even if many companies still struggle to live it day to day.
Digital era (Marketing 4.0)
The journey at the centre: digital layers on traditional, and everything becomes measurable.
Kotler’s Marketing 4.0: Moving from Traditional to Digital (2017) was less a manifesto and more a practical bridge. Digital layered on top of traditional, customer journeys became measurable across channels, and the customer became unambiguously omnichannel: web, mobile, in-store, social, email and back again, expecting consistency throughout.
The most useful idea in 4.0 was the new model of loyalty. Instead of the classic AIDA funnel (Attention, Interest, Desire, Action), Kotler proposed the “Five As”: Aware, Appeal, Ask, Act, Advocate. Advocacy as the new measure of loyalty. The most loyal customer is the one who recommends you to others.
Technology for humanity (Marketing 5.0)
Humanity at the centre, technology as the amplifier.
Kotler’s Marketing 5.0: Technology for Humanity (2021) is a synthesis. It picks up the human centricity of 3.0 and the technology of 4.0 and asks how to use what’s now possible (AI, sensors, robotics, AR/VR and more) to advance human needs, drawing on Japan’s Society 5.0 idea of technology in service of a sustainable human future.
In practice, 5.0 looks like: predictive marketing (campaigns run on likely future behaviour), contextual marketing (content that adapts to the moment), and “segments of one”, personalisation that treats every individual as their own segment.
The test is whether the technology serves a human outcome or exists for its own sake. A chatbot that solves a customer’s problem is Marketing 5.0; a chatbot that exists because every brand has one is just brand theatre.
Immersive era (Marketing 6.0)
The experience at the centre: physical and digital as one continuous reality.
Marketing 6.0: The Future is Immersive (2023) names this stage metamarketing: the convergence of physical and digital into one continuous customer reality. The progression runs multichannel (channels in parallel), omnichannel (channels integrated but distinguishable), metamarketing (channels dissolved into a single experience).
The audience is Generation Z and Alpha, the first “phygital natives”, who never drew a hard line between online and offline. The toolkit runs through AR and VR, spatial computing and sensory marketing. Reception has been more muted than the earlier books, partly because metaverse hype cooled in the same window 6.0 launched; the blending argument is sound, but the metaverse examples aged faster than the framework.
Mind-centric era (Marketing 7.0)
The mind at the centre: AI in the background, human understanding up front.
The newest book in the series, Marketing 7.0: A Guide for Thinking Marketers in the Age of AI (2026), is partly a corrective to what came before it. Kotler’s argument: AI-driven optimisation, taken too far, hollows out the authenticity that makes marketing work. The counterweight is mind-centric marketing, using cognitive science and behavioural understanding to design stories and experiences that resonate with how human minds work.
The new consumer is the “augmented human”: filtering, fragmented, and frugal. Filtering, because people have learned to tune most messages out. Fragmented, because attention is split across more channels than ever. Frugal, because economic pressure has raised the bar for what gets a yes.
The implication: AI does enormous work in the background (data, automation, personalisation), but the foreground decisions, what story to tell, what audience to seek, what value to promise, still need a marketer who understands people.
The integrated reality
Reading these eras as a linear progression is tempting and slightly misleading. None of the older eras has gone away. A small Australian SME making and selling soap, much like the businesses I consulted for before moving to Australia, is doing 1.0 marketing every time they ship a new product, 2.0 every time they segment their email list, 3.0 every time they share the maker’s story, and 4.0 every time they look at the analytics dashboard.
They’re doing 5.0 every time they let an AI tool draft the next subject line, 6.0 every time they design an in-store experience that picks up where their Instagram left off, and 7.0 every time they pause to make sure the AI-generated copy still sounds like a human wrote it. The job is the same. Only the toolkit has expanded.
The strategic mix matters more than the era. Traditional and digital, owned and earned and paid, online and in-store. The customer doesn’t experience these as separate channels; they experience your brand as one continuous thing across all of them. The work of marketing today is integration.
A century in, the basics haven’t really changed: an audience whose problem you can solve, something they’ll value, clear communication, good delivery, and a relationship that makes them want to come back. Not the newest tool, but the clearest answer to: who is this for, and why should they care?
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