LEARN. PRACTICE. GROW.Distinguish eligibility from preference
The fictional committee requires recovery within thirty minutes, inclusive. Options A, B and C provide evidence of 35, 20 and 30 minutes; D provides no evidence yet. In this exercise A fails the limit, B and C can proceed to comparison and D remains unresolved. A favorable cost score does not compensate for a requirement defined as mandatory. If the business wants to change the limit, handle it as a constraint decision with explicit authority and consequences. Do not hide it by reducing the criterion’s weight. Thirty minutes belongs to the learning scenario; it is neither a regulatory requirement nor a general rule for banking applications.
Make numbers interpretable
After eligibility, B has 90 reliability points and 50 cost-preference points; C has 70 and 90. Both scales represent preferences where higher is better. Do not confuse 90 cost points with 90 euros or a higher cost. The organization must define how evidence becomes a score, the comparison horizon and who accepts the scale. Exercise numbers are supplied to study the decision; they are not real supplier ratings. If one team scores initial price and another includes maintenance, comparison loses coherence. Create an assumptions, exclusions and confidence table before adding values that appear comparable merely because they use the same scale.
Calculate and challenge the recommendation
With reliability weighted 60% and cost 40%, B scores 74 and C scores 78. C leads among eligible options. A would score 100 but remains excluded by the mandatory limit; D would score 95 but its eligibility lacks evidence. Calculation must not turn unknown into approved. When decision makers increase reliability weight to 80%, B rises to 82 and C falls to 74. The recommendation reverses because agreed preference changed, not because an option became technically different. Record both versions and explain the changed criterion. An analyst should make the choice understandable without presenting arithmetic as authority to set priorities on behalf of accountable people.
Use sensitivity to choose the next investigation
In the two-criterion model, a tie occurs when reliability has weight two thirds and cost one third. Near that boundary, small differences in weights or assessment can change ranking. The useful response is not adding decimal places to create apparent certainty. Confirm which preferences decision makers actually support and where evidence is most uncertain. A pilot can clarify D’s recovery or B’s operational capability, but needs a specific question and observation criterion. If the leading option depends on fragile assumptions, communicate the condition and cost of obtaining additional information. A conditional recommendation can be more useful than a single ranking without boundaries.
Include implementation and operational handover
An option can satisfy functionality while still requiring training, migration, additional capacity, supplier support and retirement of old components. As a technical PM, request these dependencies before presenting the alternative as ready. Compare building, buying and combining components within the same business scope, including integration boundaries. Do not assume a purchased solution removes analysis or operational work. The decision should retain rejected alternatives and reasons, mandatory criteria, preferences, evidence and the approval owner. After selection, define how actual outcomes will be observed. Potential-value scoring informs the initial decision but does not establish realized benefit or production acceptance.
# Fictional higher-is-better preference scores.
B = 0.60 * 90 + 0.40 * 50 # 74
C = 0.60 * 70 + 0.40 * 90 # 78
# Apply mandatory eligibility separately before ranking.
# At reliability weight 2/3, these two options tie.C leads with 60/40 weights, but B leads with 80/20. A remains ineligible despite a higher score.
Common pitfalls
Compensating a mandatory constraint with points; unknown as satisfied; reversed cost scales; numerical precision as certainty.
Related topics: Requirements life cycle · Alternatives and potential value · Acceptance and operational handover
A recommendation should show which options are eligible and under which conditions preference changes.
Reference: The Business Analysis Standard · CBAP six-knowledge-area blueprint, May 2026 handbook