Product economics supports resource allocation by connecting decisions about a product with the value, costs and timing they create. It helps a team compare worthwhile options when it cannot fund them all.
The calculations are useful only when their scope is clear. Revenue, contribution, profit and cash are different quantities. State which one a decision uses and which costs are included.
Define the terms used in an investment decision
Cost of delay is the value lost by delaying an outcome. It may change over time, especially around a deadline. Estimate the consequence of a particular delay rather than assuming every week has the same cost.
Sunk cost is spending that cannot be recovered. It should not justify further investment by itself. Existing assets, future maintenance costs and obligations still matter to the next decision.
Opportunity cost is the value of the best alternative forgone. When two initiatives need the same engineers, identify what cannot proceed if one is selected.
Total cost of ownership includes acquisition or development, operation, support, change and eventual retirement. Specify the period and cost categories so options can be compared fairly.
Calculate customer value and acquisition cost
Customer acquisition cost, or CAC, divides relevant acquisition spending by acquired customers on a consistent basis. Customer lifetime value, or LTV, estimates the value of the relationship. For investment decisions, a contribution based estimate is usually more informative than revenue alone.
Consider a simplified fictional subscription with £200 monthly revenue, 75 per cent gross margin and 2 per cent monthly customer churn. Monthly gross contribution is £150. A steady churn approximation gives an expected lifetime of 50 months and an undiscounted LTV of £7,500.
At £2,500 CAC, the ratio is three to one and gross contribution payback is about 16.7 months. This model assumes stable churn and revenue, ignores expansion and excludes costs outside the stated margin. Early cohorts, changing retention and cash timing can make it misleading.
A ratio below three to one does not automatically mean losses, and a higher ratio does not prove the business is healthy. Inspect the assumptions, payback, cash requirements and costs omitted before drawing a conclusion.
Compare value from several perspectives
| Stakeholder | Relevant value | Possible evidence |
|---|---|---|
| Customers and users | A useful outcome with manageable effort | Task completion, time and repeat use |
| Business | Sustainable returns and reduced exposure | Contribution, renewal and risk estimates |
| Operations | A service that can be delivered reliably | Incidents, handling effort and capacity |
| Engineering | The ability to change and operate the system | Change lead time, failure and recovery |
| Auditors or regulators | Demonstrable fulfilment of obligations | Records and evidence that controls operate |
These measures need interpretation. Hours released from a process may create useful capacity without reducing payroll. A financial estimate should explain how the benefit is expected to be realised.
Use prioritisation calculations as decision aids
Cost of delay divided by duration can help sequence work under appropriate assumptions about value, capacity and dependencies. Weighted shortest job first uses this kind of comparison. It does not automatically settle uncertainty, mandatory commitments or work that shares a dependency.
Direct outcome measures, financial estimates and scored comparisons provide complementary evidence. Scrum.org's Evidence-Based Management guide also encourages attention to current and unrealised value, ability to innovate and time to market.
For an exercise, compare two initiatives using the same time period and cost scope. Show the future benefit, total remaining cost, delay consequence and displaced alternative. Change the least certain assumption and record whether the choice changes. If it does, improving that estimate may be worth more than refining the scoring formula.
Where each syllabus puts it
The CSPO learning objectives cover economic terms, stakeholder perspectives on value and ways to measure it in backlog decisions. The Product Strategy Practitioner course also applies these ideas to funding and allocation across products. Scrum.org's Evidence-Based Management is supporting material with a broader set of value areas, rather than a required part of the Scrum Guide.