Most Important RUP Innovations

The separation of phases and workflows, and the recognition that deploying software in a user's environment is part of the process

Explanation

The most important innovations in the RUP are: (1) the separation of phases and workflows — phases are dynamic and have business-oriented goals; workflows are static technical activities not tied to a single phase; and (2) the recognition that deploying software in a user's environment is part of the process — this is explicitly addressed in the Transition phase, something ignored by most other process models.