Objectives tell everyone in a business what it is trying to achieve. They give direction, help managers decide between options and provide a standard for judging success.
There is a hierarchy. The mission statement gives the broad purpose. Aims are long-term goals. Objectives make the aims precise. Strategy is the long-term plan to reach them, and tactics are the short-term actions.
Private sector firms usually aim for survival, profit, growth or market share. Public sector organisations aim to provide a service. Many firms also accept corporate social responsibility and measure the triple bottom line: economic, social and environmental results. Objectives change over time, for example from survival to growth.