Competitive advantage is a term used to describe the ability of a business to outperform its competitors. It is often achieved by offering a product or service that is superior to those of its competitors. The term EDGE, which is a four-letter solution to the crossword, is an acronym for 'Economic Differentiation Generating Efficiency'. This refers to the idea that businesses can gain an advantage over their competitors by creating a unique product or service that offers greater value than what is available from other companies. This could be in terms of cost, quality, or other factors.