Strategies on product and price differentiation for information goods such as software, newspapers, news, music, movies, etc. will be analyzed as well as strategies for system decisions such as switching cost, lock-in cycle, classification of lock-in, valuing an installed customer base, etc. In addition, network externalities (networks in an economic sense!) will be covered, including collective switching cost and migration paths. Which strategies can be applied in order to develop standards and alliances? Openness versus control, tactics in formal standard-setting or standard wars will be discussed. The course is based on practical examples, i.e. Microsoft, to illustrate competition policies such as regulations, syndicates and so on.