Engagement models
| Model | Best for | Commercial shape |
|---|---|---|
| Fixed fee | Well-defined scope, certification deadlines, board commitments | Single price across all phases, milestone-based invoicing |
| Time & materials | Evolving scope, multi-entity rollouts, M&A integration | Daily rate by consultant grade, monthly burn report |
| Managed retainer | Continuous compliance and multi-framework operations | Monthly subscription with defined service catalogue and SLAs |
| Outcome-based | Mature buyers who want fees tied to certification or audit pass | Base fee plus success fee on milestone achievement |
Comparison table titled "Commercial model at a glance" with 4 rows comparing Model versus Commercial shape: Fixed fee versus Single price across all phases, milestone-based invoicing; Time & materials versus Daily rate by consultant grade, monthly burn report; Managed retainer versus Monthly subscription with defined service catalogue and SLAs; Outcome-based versus Base fee plus success fee on milestone achievement.
| Model | Commercial shape |
|---|---|
| Fixed fee | Single price across all phases, milestone-based invoicing |
| Time & materials | Daily rate by consultant grade, monthly burn report |
| Managed retainer | Monthly subscription with defined service catalogue and SLAs |
| Outcome-based | Base fee plus success fee on milestone achievement |