The figure of the cluster  (widely used in business and economic environments) has served twenty years since M. Porter introduced in his book “The Competitive Advantage of Nations in 1990 but the underlying concept of agglomeration economies has already been used by economists in the 1890s and especially in the work of Alfred Marshall.

A business cluster (Wikipedia) is a “geographic concentration of business initiatives, suppliers and associated institutions in a particular field.” The role of a cluster has been crucial  in enhancing the productivity between companies that allow them to achieve an important competitive edge in national and international framework.

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