Marketing management takes place when at least one party to a potential exchange thinks about the means of achieving desired responses from other parties.
Definition of American Marketing Association
Marketing (Management) is the process of planning and executing the conception, pricing, promotion, and distribution of ideas, goods, and services to create exchanges that satisfy individual and organizational goals.
Marketing management has the task of influencing the level, timing, and composition of demand in a way that help the organization achieve its objectives. Marketing management is essentially demand management.
Marketing managers manage demand by carrying out marketing research, planning, implementation and control.
Within marketing planning, marketers must make decisions on target markets, market positioning, product development, pricing, distribution channels, physical distribution, communication, and promotion.
Marketing work in the customer market is formally carried out by sales managers, salespeople, advertising and promotion manages, marketing researchers, customer service managers, product and brand managers, market and industry managers, and the marketing vice-president.
Philip Kotler (Marketing Management, 9th Edition)