What are the identified gaps and strategies to bridge and fill them? i.e.: what functions and services will operations assume responsibility for and how will that be handed over?
What are the roles and responsibilities of those people involved in and on the receiving end of the transition activities?
What are the various actions and steps needed to achieve the outcomes?
What is the timeframe and timeline for transition?
This is not a one-off exercise.
Nor is it something done independent to the rest of the project.
It is a living plan that evolves as the project moves through its lifecycle.