This document defines and discusses Management By Objectives (MBO). MBO is a managerial system that integrates key activities through a systematic process of setting objectives at all levels of an organization to effectively achieve goals. The document outlines the assumptions, nature, process, advantages and limitations of MBO. It was first advocated by management theorist Peter Drucker in the 1950s as a way to improve performance through setting corporate, departmental and individual objectives. The key advantages include efficient management, effective planning, clarity of goals and motivation of employees. Limitations include difficulty setting goals and balancing objectives.