Manijeh Gareche - Faculty Member of Management and Accounting, Shahid Beheshti University, Tehran, Iran
Seyed Mahmoud Hosseini - Faculty Member of Management and Accounting, Shahid Beheshti University, Tehran, Iran
Masoud Taheri - Faculty of Management and Accounting, Shahid Beheshti University, Tehran, Iran

The previous studies on the field of competitive advantages of businesses were reviewed. Competitive advantage refers to a set of factors or capabilities that enable the company to demonstrate better performance comparing to the competitors. Totally ۵۹ articles in eight different fields (strategic management, strategic management of marketing, marketing management, information technology, knowledge management, resources-based theory, entrepreneurship, and human resource management) were reviewed. The results showed that among several available methods, majority of businesses employ Porter’s triple strategies (differentiation, centralization, and cost leadership) to gain competitive advantages. Among the triple strategies, the strategy of differentiation has drawn highest attention and simultaneous utilization of the three strategies is a rare case.

Competitive advantage, Resource-Based Theory, Differentiation Strategy, Centralization Strategy, Cost Leadership Strategy