Official · Technical program management · advanced
Migrate payment processors without a flag day
Create a gated migration plan when engineering, finance and support have different definitions of success.
The question
Own a 12-week migration from one payment processor to another. Produce an executable program plan with evidence-based go/no-go decisions rather than a list of meetings. No detailed service diagram is required if the dependency and decision flow is clear.
- Checkout, subscriptions, finance reconciliation, risk and support are owned by five different teams.
- New purchases can be routed gradually, but existing subscription tokens cannot all be transferred automatically.
- Finance closes books monthly. The legacy contract expires after week 12; a one-month extension is possible at a known extra cost.
What to cover
State measurable customer, financial and operational outcomes, plus explicit non-goals.
Assign accountable roles and sequence token work, integration, finance validation, cohorts and support readiness.
Define evidence, thresholds, decision owners and rollback boundaries for each cohort.
Prioritize risks, give leading indicators and decision deadlines, and compare paying for an extension with accepting residual risk.
Assume reconciliation breaks for 0.4% of a pilot cohort in week eight. Explain containment, escalation and re-planning.
How your practice is reviewed
- Measurable program outcomes (20 points): Success, scope and non-goals align customer, financial and operational outcomes.
- Dependencies and accountability (25 points): Identifies critical path, accountable roles, real prerequisites and resource contention.
- Evidence-based decisions (30 points): Cohort gates, reconciliation and irreversible transaction boundaries govern launch and rollback.
- Risk response and re-planning (25 points): Prioritizes with evidence, escalates to named roles and makes time/cost/risk tradeoffs explicit.
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