What describes the
overall aims of a buiness organization?

The answer is Mission statement.

Explanation:

A mission statement of an organization describes the overall aims of a business organization. Every company has its two statements, one is the mission statement and other is the vision statement. Vision statement describes the vision of the company, where as mission statement describes the overall goals of the organization. It gives information about the type of product it provides, its target market, its potential customers, the region where it is operated, etc. So the mission statement is the one which describes the overall aims of a business organization.