Do ... over

Hello
Could you please tell me what is the meaning of "over" in the following passage? Does it mean "consist of" (... ‘Strategic Business Units’ that is consist of the divisions and departments)?

"The obvious solution for a manager overloaded with information and pressed for the time necessary to process it is to have the information aggregated. General Electric before 1980 provided an excellent example of this type of thinking. First it introduced ‘Strategic Business Units’ (SBUs) over the divisions and departments and then ‘Sectors’ over the SBUs, each time seeking to increase the level of aggregation to enable top management to comprehend the necessary information quickly."

Source: Strategy Safari, Mintzberg et al.

Over - at a level above,

'SBU's were introduced at positions over (= higher in the hierarchy than) divisions and departments.

The writer is no doubt thinking of a management tree which looks something like this:

👁 tree-topology.jpg

Crossposted and agreeing.