Marketing management is a business discipline focused on the practical application of marketing techniques and the management of a firm's marketing resources and activities. Marketing managers are often responsible for influencing the level, timing, and composition of customer demand accepted definition of the term. In part, this is because the role of a marketing manager can vary significantly based on a business' size. For example, in a large consumer products company, the marketing manager may act as the overall general manager of his or her assigned product. From this perspective, the scope of marketing management is quite broad.

The implication of such a definition is that any activity or resource the firm uses to acquire customers and manage the company's relationships with them is within the purview of marketing management. Additionally, the Kolter and Keller definition encompasses both the development of new products and services and their delivery to customers. Noted marketing expert Regis McKenna an article "Marketing is everything." McKenna argued that because marketing management encompasses all factors that influence a company's ability to deliver value to customers, it must be "all-pervasive, part of everyone's job description, from the receptionists to the Board of Directors."

This view is also consistent with the perspective of management guru Peter Ducker, who wrote: "Because the purpose of business is to create a customer, the business enterprise has two--and only these two--basic functions: marketing and innovation. Marketing and innovation produce results; all the rest are costs. Marketing is the distinguishing, unique function of the business.” But because many businesses operate with a much more limited definition of marketing, such statements can appear controversial or even ludicrous (foolish) to some business executives. This is especially true in those companies where the marketing department is responsible for little more than developing sales brochures and executing advertising campaigns.

The broader, more sophisticated definitions of marketing management from Drucker, Kilter and other scholars are therefore juxtapose against the narrower operating reality of many businesses. The source of confusion here is often that inside any given firm, the term marketing management may be interpreted to mean whatever the marketing department happens to do, rather than a term that encompasses all marketing activities -- even those marketing activities that are actually performed by other departments, such as the sales, finance, or operations departments.^[4] If, for example, the finance department of a given company makes pricing decisions (for deals, proposals, contracts, etc.), that finance department has responsibility for an important component of marketing management -- pricing.