Class 0 - no date requirements
Class 1 - manageable date problem, existing solutions
Class 2 - uncertainty with some applications
Class 3 - uncertainty and massive volume
Class 4 - All of the above, plus Economic restraints
to mainstream options.
Non-standard unique approach needed
Class 5 - System or Application Developers. New Techniques.
Class 6 - "Vanilla" Mainstream Scenario.
Class 7 - Additional problem of Missing Critical Components.
Class 8 - Architectural Migration.
Class 9 - Terminal case. No solution possible.