This is the fourth of a series of research volume of papers from the Business and Information Technologies global research network. The BIT network comprises 21 partners from 17 countries, and conducts studies on the impact of new information and communication technologies on business practice, industry structure and economic change. This volume contains papers from BIT partners in Taiwan, New Zealand, Chile, USA, Italy, South Korea, and Switzerland. The papers address a range of subjects including the diffusion of mobile apps in the health area, role of trust in e-commerce, impact of digital technology in the role and practice of product management in technology intensive companies, new digital business practices in Taiwan, social media marketing, social activities of a B2B community with the case of BTicino, product-service system, and information diffusion in social networks.