A strategic plan to make better technology available in your law department makes much more sense to me than overall departmental plans. The software, hardware, and training covered by such a plan falls much more to the control of the department, although with corporate IT embracing it and standardizing it, than does an overall plan tied to the performance of the company and its business initiatives.
A department can much more chart its own course. It need not be reactive. Achievements can be shown within a few months; members of the department can see and appreciate improvements directly; and investments of time and money can be modest of manageable.