The document outlines the defensive principles and objectives of FC Porto. Their primary objective is to pressure and limit the opposing team in order to provoke errors and regain possession of the ball. This is done through collective defensive organization by closing down space both laterally and vertically. Players are positioned both near and far from the ball. The team aims to direct opponents to play in desired corridors and apply pressure collectively at opportune moments to force turnovers. Pressure is applied in different zones from low to high on the field through sectoral and inter-sectoral defensive organization.