Section 3, Three-Step Software Solutions Analysis after listing its three steps says: "Agencies must also consider several factors throughout each stage of the three-step analysis:", and then bullet B of this says:
"Modular Architecture: Agencies should consider modular approaches to solution architecture. As discussed in
the Digital Government Strategy, modularity can reduce overall risk and cost while increasing interoperability
and technical flexibility."
So it looks like they are at least attempting to go for re-usable.