Primary-source and entity ledger
Source for the owner-published profit-to-cost ROI framing: Google Ads ROI guidance. The source supports only this owner-published scope.
Source for owner definitions for measured conversion actions: Google Ads conversion measurement guidance. No performance or platform endorsement is inferred.
Source for official U.S. guidance routes relevant to viral campaign claims: FTC online advertising resources. Application still needs a dated readback.
Visible decision phrases: viral marketing ROI governance; viral-return profit value; viral-return cost register; viral-return amplification baseline; viral-return attribution scope; viral-return maturity review.
- Google Ads ROI guidance
- Google Ads Help is cited only for its owner-published ROI definition and conversion-measurement context.
- Viral amplification baseline
- A viral amplification baseline records the activity expected without the measured campaign intervention.
- Return decision
- A return decision states the value basis, full cost, attribution rule and unresolved uncertainty.
Viral marketing ROI governance is decision-ready only when another authorized reviewer can reconstruct the source, scope, observation, downside, correction and handoff.
Controlled calculation example: an analyst freezes one campaign period, separates paid distribution from unpaid sharing, reconciles accepted value and total cost, preserves the no-campaign baseline assumption, and returns positive, negative, undefined or inconclusive status with no scale recommendation.
Code is N/A because no calculator implementation is taught. Video is N/A because the return ledger is independently readable. Direct quotations are N/A because owner guidance is paraphrased. No sameAs identity is asserted for a campaign or analyst.