The purpose of this thesis is to introduce the software product business, business models and processes and give a practical approach to licensing principles and a software asset management. The software product business is living a new era due to break-through innovations concerning application, workstation and server virtualization. This process has influenced on the whole branch and forced manufacturers, distributors and resellers to their licensing policies and earning logics. The ICT-cluster is in front of the new challenges, because of the shortened life cycle of the products and continuously moving economical aspects caused by the customers, which are not willing to pay according to same licensing principles as before. The softwa...