The increasingly competitive market environment, in which port clusters operate today, imposes new requirements on port strategy analysis. Many port authorities and port operators now realize that a static approach to cost leadership, a sole focus on inherited factor advantages and a simplistic reliance on new infrastructure to attract or retain clients, are no longer sufficient to guarantee a port's competitive success. They need to offer greater value added to port users, as well as to society. Hence, this new market environment forces ports to reconsider their present strategic position and to reflect on the strategic options for the future. The book builds upon an in-depth survey of economic actors in the Antwerp seaport cluster, with a specific focus on the container and conventional cargo clusters. It attempts to answer the question why these particular port clusters arc more competitive than similar clusters in other ports. In order to answer this question, the study develops and extends a number of formal tools of strategy analysis that should be useful to both port authorities and port operators.