Howard E. Aldrich

Organizations are goal-directed, boundary-maintaining, activity systems.

— Howard E. Aldrich

A niche is created by the intersection of resource constraints— an abstract resource space consisting of a unique combination of resources (information, access to materials, customers, and so on) that could permit a form to survive there. Forms thus either take advantage of a niche resource space" or fail.

— Howard E. Aldrich

Active loose coupling occurs when a subsystem of an organization is more tightly coupled to an environmental sector than other subsystems, and a feedback loop connects environmental conditions with organizational responses. A feedback loop is present when an organizational mechanism for monitoring the environment exists, and when the state of the environment (or intended target of the organization's action) is compared to some desired state by members of the organization.

— Howard E. Aldrich