1. Functional organization, is a hierarchy where each employee has one clear superior. Staff members are grouped by specialty, such as production, marketing, engineering, and accounting at the top level. Specialties may be further subdivided into functional organizations, such as mechanical and electrical engineering. Each department in a functional organization will do its project work independent of other departments.
2. Matrix organization, is a blend of functional and projectized characteristics.
- Weak matrices maintain many of the characteristics of a functional organization, and the project manager role is more of a coordinator or expediter than that of a true project manager.
- Strong matrices have many of the characteristics of the projectized organization, and can have full-time project managers with considerable authority and full-time project administrative staff.
- Balanced matrix organization recognizes the need for a project manager, it does not provide the project manager with the full authority over the project and project funding.
Many organizations involve all these structures at various levels. For example, even a fundamentally functional organization may create a special project team to handle a critical project. Such a team may have many of the characteristics of a project team in a projectized organization. The team may include full-time staff from different functional departments, may develop its own set of operating procedures, and may operate outside the standard, formalized reporting structure.
Source: Project Management Body of Knowledge (PMBOK® Guide)