This book contains the refereed proceedings of the First International Conference on Software Business (ICSOB) in Jyv?skyl?, Finland, in June 2010. This inaugural conference brought together a strong international community from 17 countries from the Americas, Europe, India and Australia with research disciplines from various fields of business and technology or software management on a topic, which had until now, received only little attention from the academic community. The 13 full and 9 short papers accepted for ICSOB were selected from 35 submissions and were organized under eight themes: business models, business management, ecosystems, education and research, internationalization, open source software and social media, product management, and software as a service. The volume is completed by a short summary of each of the three keynotes, the two workshops and the three tutorials given at the conference, as well as the industrial session.