Shenhar's Project Classification - 1
 
   Although most likely a continuum, four levels of technological uncertainty, from low to high 
  - Established, traditional — Low-tech 
- Mostly established technology — Medium tech 
- Advanced technology — High tech 
- Highly advanced or exploratory — Super-high tech 
  And three levels of complexity 
  - Simple project, i.e. contains a single unit 
- Complex project, i.e. contains interactive elements 
- Program or set of projects. (This includes a large project with many sub-projects)