what is cloud computing

What is management? Management is like investment: its goal is to get the most out of resources, add the most value or get the best return. Management can be defined as: achieving goals in a way that makes the best use of all resources.
This definition covers self-management as well as managing people, being a manager. Whenever you prioritize, you are managing your time. You manage yourself and all other resources at your disposal in order to do a good job.
Leadership, by contrast, is about influencing people to change direction. When senior executives decide to change direction, this is seen as leadership. But because it is a decision, it is a management act - not leadership. Decisions flow from authority, leadership is an act of influence. Leadership is an attempt to influence followers. It's never a decision of any sort. All decisions made by executives are managerial actions.
This is not the conventional view of leadership and management but, if leadership is an influence process, one implication is that there can be no such thing as autocratic leadership. Decisions can be made autocratically, but deciding for people is not a type of influence so it shouldn't be classed as leadership.