Engagements
Scope follows the decision.
Not a weaker standard.
Every paid engagement applies the complete Decision Diligence method. The appropriate route is recommended after Decision Triage, based on what is at stake, the evidence that needs examining, the complexity of the decision and the reporting or governance required.
01 / Engagement routes
01£2,500
Focused Decision Diligence
- Best for
- A live, bounded decision that needs an independent answer quickly.
- Depth
- One complete Decision Diligence cycle, applied to the material available at the agreed evidence cut-off.
- You receive
- A concise Decision Record with one recommendation, reasoning, confidence, conditions, opposing case and what would change the answer.
02£7,500–£12,500
Full Decision Diligence
- Best for
- A higher-consequence decision requiring deeper evidence closure and a board-ready record.
- Depth
- The same complete method, with deeper evidence examination, targeted challenge and controlled re-testing where material gaps are closed.
- You receive
- A full executive decision report and board summary, with the evidence, assumptions, scenarios, risks and governance conditions made inspectable.
03Bespoke
Board Decision Diligence
- Best for
- Multiple linked decisions, material stakeholder tension or a formal governance process.
- Depth
- A tailored mandate across decisions, evidence owners and governance thresholds, without diluting independent judgement.
- You receive
- An agreed set of Decision Records, board materials and decision-governance support appropriate to the mandate.
Before an engagement
Decision Triage
The free suitability and proportionality step establishes whether Decision Diligence is warranted. Cortavian then recommends the appropriate engagement route. Triage is not Decision Diligence, substantive analysis or a recommendation on whether you should proceed.
Use Decision Triage ↗02 / Commercial route
Bring the decision.
Agree the mandate.
Focused, Full and Board are proportional engagement routes, not products the buyer is expected to diagnose.
Following triage, Cortavian sets out the recommended route, written mandate, evidence boundary, timing and fee. Work begins only after those terms are accepted.
An organisation that has successfully used Cortavian and later has a continuing flow of consequential decisions can discuss an ongoing arrangement.
See fees and commercial principles ↗Before commitment
Have a decision worth testing?
Start with a confidential suitability conversation. No work begins until the scope, route, timing and fee are agreed in writing.
Discuss a Decision ↗