Today the capability to create and apply new knowledge represents one of the main sources of sustained competitive advantage. Nevertheless, there are very few emperical works. This book develops an improved and extended theoretical model about knowledge creation and transfer within organizations. Part of the proposed model is tested emperically with a survey in 115 knowledge-intensive firms. The emperical results show the different knowledge creation processes employed by firms in practice. This allows us to obtain evidence-driven models that depict different kinds of knowledge creation processes.