The marketing discipline had its origins in the early 20th century as an offspring of economics. Economic science had neglected the role of middlemen and the role of functions other than price in the determination of demand levels and characteristics. Early marketing economists examined agricultural and industrial markets and described them in greater detail than the classical economists. This examination resulted in the development of three approaches to the analysis of marketing activity: the commodity, the institution, and the function.
Key Ideas: Each business is unique and that there can be no formula for achieving competitive advantage; firms should adopt a flexible planning and review process that aims to cope with strategic surprises and rapidly developing threats; management's focus is on how to deliver superior customer value; highlights the key role of marketing as the link between customers and the organisation.

^ Porcu, L., del Barrio-Garcia, S., and Kitchen, P.J., "How Integrated Marketing Communications (IMC) works? A theoretical review and an analysis of its main drivers and effects/ ¿Cómo funciona la Comunicación Integrada de Marketing (CIM)? Una revisión teórica y un análisis de sus antecedents Efectos," Comunicación y Sociedad, Vol. XXV, Núm. 1, 2012, pp. 313–48
Needs: Something necessary for people to live a healthy, stable and safe life. When needs remain unfulfilled, there is a clear adverse outcome: a dysfunction or death. Needs can be objective and physical, such as the need for food, water, and shelter; or subjective and psychological, such as the need to belong to a family or social group and the need for self-esteem.
Email marketing - Email marketing in comparison to other forms of digital marketing is considered cheap; it is also a way to rapidly communicate a message such as their value proposition to existing or potential customers. Yet this channel of communication may be perceived by recipients to be bothersome and irritating especially to new or potential customers, therefore the success of email marketing is reliant on the language and visual appeal applied. In terms of visual appeal, there are indications that using graphics/visuals that are relevant to the message which is attempting to be sent, yet less visual graphics to be applied with initial emails are more effective in-turn creating a relatively personal feel to the email. In terms of language, the style is the main factor in determining how captivating the email is. Using casual tone invokes a warmer and gentle and inviting feel to the email in comparison to a formal style. For combinations; it's suggested that to maximize effectiveness; using no graphics/visual alongside casual language. In contrast using no visual appeal and a formal language style is seen as the least effective method.[59] A DAY IN THE LIFE OF A DIGITAL MARKETING MANAGER | WHAT DOES A DIGITAL MARKETER DO? & SALARIES