Four main kinds of information systems serve different organization level.

1. Operational-level systems
2. knowledge-level systems
3. Management-level systems
4. Strategic-level systems


Operational-level systems support operational managers by keeping track of the elementary activities and transactions of the organization, such as sales, receipts, cash deposits, payroll, credit decisions, and the flow of materials in a factory.

Knowledge-level systems support the organizations knowledge and data workers. The purpose of this is system is to help the business firm integrate new knowledge into the business.

Management-level systems serve the monitoring, controlling, decision making, and administrative activities of middle managers.

Strategic-level systems help senior management tackle and address strategic issues and long term trends, both in the firm and in the external environment.