2 Answers

For many people working in modern business environments, it's hard to remember a time when non-managerial employees weren't involved with, and interested in, corporate strategy and goals. We are regularly reminded about the corporate mission statement, we have strategy meetings where the "big picture" is revealed to us, and we are invited to participate in some decisions. And we're aware of how our day-to-day activities contribute to these corporate goals.
This type of managing hasn't been around forever: It's an approach called Management by Objectives; a system that seeks to align employees' goals with the goals of the organization. This ensures that everyone is clear about what they should be doing, and how that is beneficial to the whole organization. It's quite easy to see why this type of managing makes sense – when the parts work in unison the whole works smoothly too. And by focusing on what you're trying to achieve, you can quickly discriminate between tasks that must be completed, and those that are just a waste of valuable time.

Thank wiki.

The objective of management is, simply, to ensure the completion of tasks within the confines of performance, legal,  and time expectations.