The aim of this subject is to introduce students to the economic theory of business strategy and its implications for modern markets. The foundation theories of monopoly and perfect competition are reviewed, and their implications for markets are analysed. A brief introduction to game theory is presented, which allows the rigorous analysis of the strategic interaction between businesses in imperfect markets. Students will apply economic principles to study strategic pricing, horizontal and vertical mergers, strategic entry deterrence, tying and bundling, advertising and innovation. Upon completion of the subject, students will have gained the tools and knowledge to analyse and evaluate contemporary business strategies.