ABSTRACT: historically organizations have shown a process of increasing the complexity of their structures and, after the globalization, a flattening of their organizational structure, leading them to adopt new ways of managing their processes and teams. Leadership has always played an important role in achieving goals, but its functions have been changing and reaching a strategic aspect for organizations. Leadership has moved from a function just to achieving goals to the function of convincing, aggregating and guiding people towards the objectives. The choice of a leader, is more than assigning powers within the organizational structure, interpersonal and intrapersonal factors of the leader must be taken into account for their choice, training and development effective leader. The development of effective leadership must be a constant activity within the high-performance organization, complex problems need high performance leaders and teams, focused on work and objectives, seeking excellence inside and outside the organization. The purpose of this paper is to verify the factors that interfere in the formation of the leader and his role in the organization as well as his development, to demonstrate the leadership styles and ways of acting within the organization, to show how the characteristics of high performance teams are and their strategic role in organizations in order to achieve a high performance.