Project Complexities
I	These bear all of the characteristics of Type II and III projects in that they use complex technologies and have high business value. They are the most demanding of the four types and are often mission-critical.
II	This type may use new or complex technologies. Because their business value may be low or moderate, these projects can be distinguished from Type I projects.
III	These are characterized by their high business value even though they may have low or moderate technical complexity. These projects are therefore distinguished from the other two by their high business content.
IV	These projects have low business value and use well-established technology. In fact, these are projects that may have been repeated several times and are now routine.

Project Manager Types
Team Leader	Team leaders have responsibility for part of the project. They are generally assigned responsibility for an activity and may have a small number of staff assigned to the activity whose work they will manage.
Project Manager	This individual will have management responsibility for projects that are classified as simpler, less complex, lower risk, not mission critical, etc. They are the more junior of the two classes of project manager.
Senior Project Manager	These are the more experienced of the two project manager classes. They are qualified to manage projects that are more complex, higher risk, or mission critical.
Program Manager	This classification is reserved for those individuals who have achieved the highest level of professionalism and experience in project management. They will often manage project managers on very complex or multi-project undertakings.