The research of this thesis deals with the issue of knowledge transfer during the transition process of an IT project outsourced in EPST. In particular, How to transfer knowledge, experience and routines related to outsourced activities from outgoing team to a new incoming team? We focus on the transition due to its significance for outsourcing success, its complexity and theoretical richness, and its limited current understanding. We chose to approach this problem through knowledge management. In the first part of this thesis, based on the Goal-Question-Metric paradigm, we propose an approach for the definition of quality metrics covering the given operational requirements. The metrics we define take tacit knowledge into account, using information from the structural analysis of an informal network. In a second phase of this research, we developed a method, relying on capitalization on knowledge and theoretical mechanisms of knowledge transfer, and a tool to implement this process of knowledge transfer