Philip Kotler is an American marketing author, consultant, and professor emeritus; the S. C. Johnson & Son Distinguished Professor of International Marketing at the Kellogg School of Management at Northwestern University (1962–2018). He is known for popularizing the definition of marketing mix. He is the author of over 80 books, including Marketing Management, Principles of Marketing, Kotler on Marketing, Marketing Insights from A to Z, Marketing 4.0, Marketing Places, Marketing of Nations, Chaotics, Market Your Way to Growth, Winning Global Markets, Strategic Marketing for Health Care Organizations, Social Marketing, Social Media Marketing, My Adventures in Marketing, Up and Out of Poverty, and Winning at Innovation. Kotler describes strategic marketing as serving as "the link between society's needs and its pattern of industrial response."

Marketing is the act of satisfying and retaining customers. It is one of the primary components of business management and commerce.