Matrix Organization

Definition: a Matrix Organization is an organizational structure that is matrix-shaped. It has 2 axes, rather than a pyramid-shape such as is the case in a traditional organizational hierarchy. Besides the vertical authority, a MO has some form of horizontal or lateral authority, influence, or communication.
For employees this means that they must deal with dual lines of authority, dual sources of reward and punishment, dual reporting and communication channels, shared responsibility and accountability.
MOs require extensive and very effective communication systems and can result in higher overhead because they create more management positions.

More on matrix organizations.
More on decision making: Centralization, Chain of Command, Decentralization, Delegation, Employee Empowerment, more...

MBA Brief offers brief, yet very accurate definitions of MBA concepts, frameworks, methods and models. We keep it short and provide some links in case you'd like to learn more around a subject.