If all activities, which directly or indirectly facilitate that exchange of goods done through internet and other online environments is known as Electronic Commerce.

Content marketing is said to be the art of communicating with customers and prospects without selling. The Content Marketing institute calls it non-interruption marketing.

(i) Referral marketing is the method of promoting products or services to new customers through referrals.
(ii) Referral marketing is refer to spreading the word about a product or service through existing customers of business enterprises rather than through traditional advertising
(iii) Word-of-mouth marketing, which occurs when others tell each other about a business, is also considered to be a form of referral marketing.

A commodity exchange is an organized and regulated market that facilitates the purchase and sale of contracts whose values are tied to the price of commodities (e.g. crude oil, natural gas, copper and gold).

(i) Social marketing is a new marketing tool.
(ii) It is the systematic application of marketing philosophy and techniques to achieve specific behavioral goals which ensure social good.
(iii) For example, this may include asking people not to smoke in public areas, asking them to wear seat belts or helmets, etc.

E-Tailing or electronic retailing refers to selling of goods and services through a shopping website (internet) or through virtual store to the ultimate consumer.

E-Marketing is achieving marketing objectives through use of digital technologies like Internet, World Wide Web, email, wireless media and management of digital Customer data and electronic customer management systems (E-CRM).

(i) Green making implies marketing environmentally friendly products.
(ii) It refers to holistic marketing concept with growing awareness about the implications of global warming, non-biodegradeable solid waste, harmful impact of pollutants etc.
(iii) Green marketing is also known as environmental marketing.

(i) Regular production or purchase and sale of goods undertaken with an objective of earning profit is called business.
(ii) If all the business transaction carried out through Internet and other Online tools is called E-business. Example: Web, Internet, etc.