The goal of this course is to provide students with theoretical and practical tools to understand how and why companies develop their business abroad. The course looks at the internationalization processes of the firms step by step, from the first decisions linked to internationalization to the establishment of a subsidiary in a foreign country. First, it introduces participants to the main international decisions companies should take in a global shifting world and provide them with a range of strategic tools for international business manager. Second, the course details different internationalization paths enabling companies to build up their international network. Then, it focuses on the organization of firms abroad, illustrating relevant issues such as intercultural management and headquarter-subsidiary relations. During the course, apart from presenting theoretical elements and providing examples, participants work together in order to address real world situations and manage concrete issues in International Business.