They are discussed below :
(i) Product : Product is the main element of marketing. Without a product, there can be no marketing.
(ii) Price : Price is the value of a product expressed in monetary terms. It is the amount charged for the product.
(iii) Place : The third element of product mix, namely place or physical distribution facilitates the movement of products from the place of manufacture to the place of consumption at the right time.
(iv) Promotion : An excellent product with competitive price cannot achieve a desired success and acceptance in market, unless and until its special features and benefits are conveyed effectively to the potential consumers.

(a) To the Society:
(i) Marketing is a connecting link between the consumer and the producer.
(ii) Marketing helps in increasing the living standard of people.
(ii) Marketing helps to increase the nation's income.
(iv) Marketing process increases employment opportunities.
(v) Marketing creates modern cultivators.
(vi) Marketing removes the imbalances of supply by transferring the surplus to deficit areas, through better transport facilities.
(vii) Marketing helps to maintain economic stability and rapid development in underdeveloped or developing countries.
(viii) Marketing includes all activities in the creation of utilities- form, place, time and possession.
(ix) A reduction in the cost of marketing is a direct benefit to society.
(x) Marketing adds value of goods by changing their ownership and by changing their time and place of consumption.
(b) To the individual firms:
(i) Marketing generates revenue to firms.
(iii) Marketing section of a firm is the source of information to the top management for taking overall decisions on production.
(iii) Marketing and innovations are the two basic functions of all businesses, the world is dynamic.
(iv) Marketing facilities the development of business and creates employment opportunities for people.

(i) Barter System : The goods are exchanged against goods, without any other   medium of exchange, like money.
(ii) Production Orientation : This was a stage where producers, instead of       being concerned with the consumer preferences, concentrated on the mass production of goods for the purpose of profit.
(iii) Sales Orientation : The stage witnessed major changes in all the spheres of economic life. The selling became the dominant factor, without any efforts for the satisfaction of the consumer needs.
(iv) Marketing Orientation : Customer's importance was realised but only as a means of disposing of goods produced. Competition became more stiff.
(v) Consumer Orientation : Under this stage only such products are brought forward to the markets which are capable of satisfying the tastes, preferences and expectations of the consumers-consumer satisfaction.
(vi) Management Orientation: The marketing function assumes a managerial role to co-ordinate all interactions of business activities with the objective of planning, promoting and distributing and services to the present and potential customers.