Model the whole three-year commitment.
Compare the platform together with implementation, integrations, upgrade work, operating effort, and the cost of explaining past decisions.
Incumbent operating model
100- Licence and hosting: 28
- Implementation project: 34
- Change requests: 21
- Customer team allocation: 17
AllegoryOS example
46- Subscription: 40
- Onboarding: 6
Illustrative normalized three-year model. Values are evaluation inputs, not customer results, guaranteed savings, or a commercial quote. Share an incumbent quote for a written line-by-line comparison.
Four costs that belong in the business case
Time to market
Model the cost of the months before a product can write business, not only the platform invoice.
Customized forks and upgrade work
Include the work required to maintain customer-specific code and reconcile it with each upgrade.
Integration operations
Count the people, monitoring, retries, mappings, and incident work required to keep separate systems aligned.
Audit and explanation effort
Include the time needed to reconstruct decisions, pricing, and document inputs for internal and external review.