VERIFICATION
A saving is verified after the change.
Expected savings are estimates. HKGpipi measures the post-change billing result and compares it with the agreed baseline before reporting a verified saving.
Decision rule
Estimate before deployment.Measure after deployment.
01 · Definitions
Three terms keep the outcome honest.
- Expected saving
- An estimate of the economic effect before an approved change is deployed.
- 30-day measurement view
- The observed post-change billing result during the current 30-day measurement view.
- Verified annualised saving
- The measured post-change saving, normalised where required and expressed as an annualised value under the agreed verification basis.
A 30-day measurement view is a post-change measurement context. It does not mean the whole engagement finishes in 30 days, that every AWS workload requires exactly 30 days, or that the contractual methodology is universally fixed.
02 · Verification model
Reconcile the result against an agreed basis.
The baseline and treatment of relevant workload changes are agreed before outcome-based implementation begins.
03 · Normalisation
Why post-change spend may need context.
Factors that may need to be accounted for when interpreting post-change spend include:
- Workload-volume changes
- Unrelated infrastructure changes
- Pricing changes
- Commitment effects
- Architectural changes outside the approved remediation
04 · Measurement
Expected becomes verified through reconciliation.
Illustrative reconciliation: expected annualised saving £184,000; verified annualised saving £176,420; variance to expected −£7,580 (−4.1%).
- Deployment
- Day 0
- 30-day measurement view
- Verified annualised result
05 · Boundaries
What verified does not mean.
- The pre-change estimate was exact.
- Every AWS billing movement is attributed to one remediation.
- Workload demand remained unchanged.
- A saving is guaranteed before deployment.
06 · Commercial boundary
Verification is also a commercial boundary.
For outcome-based implementation, the contractual verification basis is agreed before implementation begins. The 25% fee applies to savings that meet that agreed definition.