We have modelled the direct costs of the solution, but the equipment we have considered
so far must be housed somewhere. This itself will incur a cost, if the facility
is a third-party location, or at least an internal cross-charge if it is owned by
the same business.
As with the original service and resource elements, we make a clear distinction
between the ‘cost of a thing’ and the ‘requirement (or driver)
for that thing’.