Philip Kotler, the man who transformed marketing into a modern science
(english version)
Today, May 27, 2026, Professor Kotler turns 95.
There is a before and an after Philip Kotler in the history of marketing. Before him, marketing was often regarded as a collection of commercial techniques, sales tools, and advertising practices lacking a coherent theoretical structure. In academia, marketing consisted of a series of authoritative writings exploring the discipline in a fragmented and uncoordinated way. After Kotler, marketing became a scientific and interdisciplinary discipline capable of connecting economics, psychology, sociology, statistics, and management.
Philip Kotler is universally recognized as the “father of modern marketing”. As professor at the Kellogg School of Management at Northwestern University, Kotler has influenced generations of managers, entrepreneurs, consultants, and academics around the world. The Financial Times ranked him among the greatest management gurus of all time, while the Management Centre Europe described him as “the world’s foremost expert on strategic marketing.”
His greatest contribution was redefining the very role of marketing. No longer merely a business function focused on selling products, marketing became a strategic process aimed at creating value for customers, companies, and ultimately society itself. Kotler brought order to the discipline, distinguishing it from advertising, and helped spread it worldwide, leading hundreds of thousands of companies, from SMEs to multinational corporations, to adopt marketing as a strategic function.
“Marketing Management”: the book that changed marketing forever
In 1967, Kotler published “Marketing Management“, a work destined to become the most widely adopted marketing textbook in business schools and universities across the globe. The book represented a true cultural revolution.
Until then, marketing textbooks had been largely descriptive. Kotler instead introduced a scientific and analytical approach, integrating economics, organizational theory, consumer behavior, quantitative research, and strategic planning. Marketing became a fully-fledged academic discipline.
It was within this framework that many foundational concepts were systematized, including:
-market segmentation;
-targeting;
-positioning (developed by Al Ries and Jack Trout);
-the marketing mix, the famous 4Ps, originally formulated by Jerome McCarthy in 1960;
-competitive analysis (alongside the work of Michael Porter and others);
-customer value;
-strategic marketing planning.
Ndr: A major contribution to the concept of marketing strategy will be made by the European school of marketing, particularly the French school, with Jean Jacques Lambin, and the Italian school, with Valdani, Vicari, Guatri, Costabile, etc.
Over the years, the 4Ps evolved into 6Ps (adding Power and Public Relations), then 7Ps (adding Purpose), and eventually 8Ps (adding People). Today, many scholars increasingly emphasize the “5P model,” focusing particularly on People.
Kotler transformed marketing into a customer-centered managerial philosophy. The objective of a company was no longer simply to sell what it produced, but to understand market needs and desires.
Even today, “Marketing Management”, which reached its sixteenth international edition in 2022 alongside Kevin Keller, Alex Chernev, Fabio Ancarani and Michele Costabile, remains the “marketing bible” for universities and multinational corporations.
The 1970s: marketing moves beyond the corporation
During the 1970s, Kotler introduced another conceptual revolution by demonstrating that marketing was not limited to private companies.
With “Strategic Marketing for Nonprofit Organizations” (1975), he brought marketing into the nonprofit world, showing how hospitals, universities, foundations, and museums could use positioning, communication, and public engagement strategies.
In 1987, Kotler co-authored “High Visibility” with Irving Rein and Martin Stoller, a book dedicated to celebrity marketing and one of the earliest works to outline the foundations of personal branding. The book demonstrated marketing’s adaptability beyond traditional business environments and into the entertainment industry.
With “Social Marketing” (1989), Kotler expanded the paradigm even further. Marketing could be used to influence social behavior and improve quality of life. Thus emerged the concept of social marketing, applied to public health, environmental protection, road safety, prevention campaigns, and civic engagement.
Marketing ceased to be merely a commercial tool and became an instrument of cultural transformation.
“Principles of Marketing”: marketing for millions of students
In 1980, Kotler published “Principles of Marketing“. If “Marketing Management” became the strategic textbook for managers and MBA programs, “Principles of Marketing” became the world’s most widely used introductory marketing manual. Entire generations of students learned the foundations of the discipline through Kotler.
Concepts such as market orientation, branding, distribution, pricing, communication, and customer satisfaction entered common business language.
Kotler’s extraordinary achievement was making complex concepts accessible without oversimplifying them, thereby creating a universal language of marketing.
The 1990s: globalization, places, and brands
With globalization in the 1990s, Kotler expanded marketing’s scope even further.
In 1993, he published “Marketing Places”, a pioneering work on place marketing. Cities, regions, and nations were interpreted as territorial brands competing to attract investment, tourism, talent, and businesses.
Today, nation branding is central to international economic policy, but Kotler anticipated this trend decades earlier. It was during these same years, between 1987 and 1990, that Ireland became one of the first countries to appoint a minister specifically focused on national marketing and promotion.
In 1999 came “Kotler on Marketing”, a synthesis of his managerial thinking. The book addressed the challenges companies and marketing managers faced amid rapidly changing markets. It reinforced key marketing paradigms and introduced the term “reverse marketing” for the first time.
In the early 2000s, Kotler focused increasingly on innovation.
With “Lateral Marketing” (2003), he proposed a creative approach capable of overcoming the limitations of traditional vertical marketing. The most effective innovations, he argued, do not emerge solely from incremental product improvements, but from redefining markets and customer needs.
In 2004, he published “Ten Deadly Marketing Sins”, a book that became highly influential among managers and consultants. Kotler identified ten critical mistakes made by companies, including:
-poor customer understanding;
-lack of differentiation;
-weak brand management;
-short-term strategic thinking.
The book served as a call for strategic discipline in an era dominated by global competition.
From Marketing 3.0 to Marketing 6.0: the evolution of the discipline
Among Kotler’s most influential contributions is certainly his evolutionary theory of marketing.
If Marketing 1.0 focused on production, distribution, and product sales, and Marketing 2.0 emphasized competition and customer satisfaction, Marketing 3.0 highlighted the importance of the customer as a human being carrying values, emotions, aspirations, and social responsibilities.
In 2010, Kotler published “Marketing 3.0” alongside Hermawan Kartajaya and Iwan Setiawan. Businesses, according to Kotler, needed a purpose, a mission capable of generating positive impact.
“Marketing 4.0” (2017) interpreted the digital transformation. Marketing entered the era of social media, omnichannel experiences, and online-offline integration. Consumers became hyperconnected, informed, and active participants in brand conversations.
Then came “Marketing 5.0” (2021), where Kotler explored the impact of advanced technologies such as artificial intelligence, big data, machine learning, and predictive marketing.
Technology, however, had to remain human-centric: innovation should serve people rather than replace human relationships.
The centrality of the human being had already emerged in “H2H Marketing: The Genesis of Human-to-Human Marketing” published in 2020, alongside German authors Waldemar Pfoerstch e Uwe Sponholtz.
With “Marketing 6.0” (2024), Kotler explored immersive economies, the metaverse, hybrid experiences, and the convergence of physical and digital realities.
Brand activism, sustainability, and the common good
In recent years, Kotler expanded his thinking far beyond traditional marketing.
“Brand Activism” (2018), written with Christian Sarkar, argued that companies could no longer focus solely on profit. Brands, according to Kotler, must take positions on environmental issues, civil rights, inclusion, and social justice.
In “Confronting Capitalism” (2015) and “Advancing the Common Good” (2019), he criticized the distortions of contemporary capitalism and proposed a more socially oriented economic vision.
The term “Regenerative Marketing” also emerged during this period, later becoming the basis of the 2021 book co-authored with Christian Sarkar and Enrico Foglia.
In Kotler’s vision, marketing is no longer merely an economic tool, but an effective lever for improving society.
Kotler’s critics
As surprising as it may seem, even a professor and author such as Philip Kotler has his critics. In essence, detractors often criticize the limited operational practicality of his teachings and the difficulty of applying marketing principles within the day-to-day reality of businesses.
However, intellectual honesty requires acknowledging several key points:
-Kotler’s marketing framework was designed primarily for medium-to-large enterprises and multinational corporations, especially from U.S.;
-it is an academic discipline grounded in research and conceptual analysis;
-who wants tactics activities can study the masters of advertising;
-it must be applied with a strong humanistic perspective;
-Kotler extends marketing far beyond corporate boundaries into broader societal contexts.
In Italy, where around 80% of the business landscape consists of small and medium-sized enterprises, this issue is particularly evident. Most companies lack a structured marketing department, and marketing responsibilities are often entrusted to inexperienced personnel or confused with communication activities alone.
This occurs despite Italy’s strong academic tradition, with influential schools of thought and scholars who have significantly contributed to marketing theory since the 1980s.
In 2023, Kotler published “Entrepreneurial Marketing: Beyond Professionalism to Creativity, Leadership and Sustainability” together with Hermawan Kartajaya, Hooi Den Huan, and Jacky Mussry.
The book, translated into Italian as “Il nuovo marketing imprenditoriale”, seeks to bridge the gap between marketing theory, entrepreneurs, and managers by conceptualizing entrepreneurial marketing, analyzing marketing’s relationship with other corporate functions, including leadership, and introducing the Omnihouse framework.
The legacy of Philip Kotler
Waiting for the master’s latest works, we can affirm that the impact of Philip Kotler is almost impossible to measure.
He has written hundreds of books and scientific articles. His works have been translated into dozens of languages and adopted by the world’s leading universities.
More importantly, Kotler changed the way companies, governments, institutions, and organizations understand their relationship with people.
He taught that the customer is the center of strategy, that value matters more than the product itself, and that brands must build relationships. He established marketing as the most powerful function within any company or organization.
More than an author, Philip Kotler has been the great architect of contemporary marketing.
And perhaps no other scholar in the history of management has succeeded in transforming a technical and humanistic discipline into such a broad vision of economics, society, and the future.
Thank you, Mr. Kotler.
(written by Luca Scrimieri)
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