This book provides a problem-driven, theoretically-founded, and empirically-rich treatment of the so far still understudied process of position-formation inside the EU Commission. It reveals that various internal political positions prevail and that the role of power and conflict inside the European Commission is essential to understanding its policy proposals. Opening the 'black box' of the Commission, the book identifies three ideal-types of internal position-formation. The Commission is depicted as motivated by technocratic problem-solving, by competence-seeking utility maximization or ideologically-motivated policy-seeking. Specifying conditions that favour one logic over the others, the typology furthers understanding of how the EU system functions and provides novel explanations of EU policies with substantial societal implications.