C.32.MWA:4.3 - Conditional product-boundary comparison

Only when product identity is the current architecture question, compare these four genuinely different arrangements:

1. one domain DPF;
2. independently maintained sibling DPFs;
3. direct use of FPF plus exact domain sources; and
4. a proposed common applied DPF.

For each arrangement, state the recurring practitioner problem, first useful result, independently useful boundary, sources and maintenance burden, and what another arrangement would leave hidden or duplicate. These four are comparison forms, not a selected product roster. When product identity is not the question, do not force this comparison into the Method.