Competitive advantage  In business, a competitive advantage is the attribute that allows an organization to outperform its competitors. A competitive advantage may include access to natural resources, such as high-grade ores or a low-cost power source, highly skilled labor, geographic location, high entry barriers, and access to new technology. Competitive advantage is the leverage a business has over its competitors. This can be gained by offering clients better and greater value. Advertising products or services with lower prices or higher quality piques the interest of consumers. Target markets recognize these unique products or services. This is the reason behind brand loyalty, or why customers prefer one particular product or service over another. Value proposition is important when understanding competitive advantage. If the value proposition is effective, that is, if the value proposition offers clients better and greater value, it can produce a competitive advantage in either the product or service. The value proposition can increase customer expectations and choices. Michael Porter defined the two ways in which an organization can achieve competitive advantage over its rivals: cost advantage and differentiation advantage. Cost advantage is when a business provides the same products and services as its competitors, albeit at a lesser cost. Differentiation advantage is when a business provides better products and services as its competitors. In Porter's view, strategic management should be concerned with building and sustaining competitive advantage. Competitive advantage seeks to address some of the criticisms of comparative advantage. Competitive advantage rests on the notion that cheap labor is ubiquitous and natural resources are not necessary for a good economy. The other theory, comparative advantage, can lead countries to specialize in exporting primary goods and raw materials that trap countries in low-wage economies due to terms of trade. Competitive advantage attempts to correct this issue by stressing on maximizing scale economies in goods and services that garner premium prices (Stutz and Warf 2009). The term "competitive advantage" refers to the ability gained through attributes and resources to perform at a higher level than others in the same industry or market (Christensen and Fahey 1984, Kay 1994, Porter 1980 cited by Chacarbaghi and Lynch 1999, p. 45). The study of this advantage has attracted profound research interest due to contemporary issues regarding superior performance levels of firms in today's competitive market. "A firm is said to have a competitive advantage when it is implementing a value creating strategy not simultaneously being implemented by any current or potential player" (Barney 1991 cited by Clulow et al.2003, p. 221). Successfully implemented strategies will lift a firm to superior performance by facilitating the firm with competitive advantage to outperform current or potential players (Passemard and Calantone 2000, p. 18).