noun
transition plan
A plan for moving from one system, state, or phase to another; often used in business, IT, and organizational contexts.
新システムへの移行計画を策定する。
We formulate a transition plan to the new system.
移行計画に従って、データの移行を進めています。
We are proceeding with data migration according to the transition plan.
Compound of 移行 (transition) + 計画 (plan).