The mission of an organization is the unique reason for its existence that sets it apart from all others (A. James, F. Stoner, and Charles Wankel) The organization's mission describes why the organization exists and guides what it should be doing. Often, the organization's mission is defined in a formal, written mission statement. Decisions on mission are the most important strategic decisions, because the mission is meant to guide the entire organization. Although the terms "purpose" and "mission" are often used interchangeably, to distinguish between them may help in understanding organizational goals.
A goal is a desired future state that the organization attempts to realize (Amitai Etzioni).