I think the matrix organization is the most efficient. The matrix organizational structure has a great influence on the project management. The matrix evolves to fill a need for an organization capable of dealing with great project size and complexity. It has greatly added to the versatility and effectiveness of project management. The matrix also permits project management to be effective not only for very large projects but small projects as well, and is extremely valuable for solving multidisciplinary problems. The advantages of a matrix organization are: good management of resources, no department or project silos, and knowledge transfers well from project to project and between departments.