V-model
Specification, design, build, validation, and UAT. Evidence chain for critical requirements.
En clair : Every requirement has its test and its evidence.
In plain terms
The right lifecycle for the right level of rigor.
On critical systems, the V-model structures specification, design, validation and acceptance. Every requirement has its evidence.
On evolving products, iterative cycles accelerate learning while industrializing change. The two are not mutually exclusive: we iterate within an evidence framework.
Change management avoids tunnel vision: impact analysis, validation, planning and controlled production release.
We capitalize requirements, tests, and decisions so the next cycle starts from a solid base, not oral memory.
VEnd-to-end traceability
IterativeShort feedback loops
ChangeControlled impacts
UATFormal acceptance
What we do
Structure the delivery cadence.
Project cycles that sustain the required criticality and pace.
Iterative cycle
Incremental deliveries, feedback, and continuous adjustments. Reduces tunnel vision.
En clair : We learn early, we fix early.
Change management
Requests, impacts, validation and go-live. Change becomes a process, not an exception.
En clair : We evolve without improvisation.
Document control
Requirements, test evidence and knowledge capture. Documentation serves audit and recovery.
En clair : Knowledge remains accessible after the project.
Qualification & UAT
Validation campaigns, acceptance criteria and acceptance reports.
En clair : Go-live based on evidence, not intuition.
Frequently asked questions
Project cycles — questions.
When do you recommend the V-model?
When regulatory, safety, or qualification requirements impose end-to-end traceability. It is a requirements framework—not imposed slowness.
Can we iterate within a V-model cycle?
Yes: prototypes and short design loops, without breaking the evidence chain. Iteration does not cancel qualification.
How do you industrialize changes?
Requests, impact analysis, validation, scheduling, testing and controlled cutover. Emergencies also follow a formalized path.
Who writes the requirements?
Joint business/technical drafting, with testable acceptance criteria. A vague requirement is not a requirement.
What is the link to simulation?
Simulation validates procedures and HMI before deployment or during sustainment, alongside acceptance testing.
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