Answers:
The term “Core Competency” has its origin in an article titled “The Core Competence of the Corporation”, written by C. K. Prahalad and Gary Hamel for the Harvard Business Review in 1990. In this article, core competency has been defined as “The collective learning and coordination skills behind the firm's product lines”. The authors illustrated that the core competencies of an organization led to the development of core products, which in turn, can be used for personalization of products for end users. An organization’s core competency is developed through 7continuous evolution over a period of time. Core competencies are also essential to succeed in global market.
The authors claimed that – “In the 1990s managers will be judged on their ability to identify, cultivate, and exploit the core competencies that make growth possible - indeed, they'll have to rethink the concept of the corporation itself”. (C K Prahalad and G Hamel, 1990.) When the core competencies are matched with the market opportunities, new businesses are created. By combining and matching core competencies to market opportunities, multiple businesses can also be created. The core competencies help to bind the business units together so as to form a comprehensive portfolio.

The factors which help to identify the core competency of the organization –
 a) It should provide the company with a wide variety of markets
 b) It should contribute significantly to product benefits

 c) It should be difficult for competitors to imitate or duplicate