is a comparative concept of the ability and performance of a firm, sub-sector or country to sell and supply goods and/or services in a given market. The usefulness of the concept, particularly in the context of national competitiveness, is vigorously disputed by economists, such as Paul Krugman.
The term may also be applied to markets, where it is used to refer to the extent to which the market structure may be regarded as perfectly competitive. This usage has nothing to do with the extent to which individual firms are "competitive'.