Case study
Industrial services firm: A brittle legacy app was stabilized, documented and replatformed.
Anonymized proof page with method notes, redacted visuals and handover artifacts.
Operations control surface
Order-to-cash workflow
Healthy12:06
Live process rail3 exceptions watched
- 1Capture
- 2Validate
- 3Route
- 4Approve
- 5Report
Exception queue
Needs owner- Credit hold requires approvalFinance
- Warehouse count mismatchOps
- Report refreshed from sourceAuto
340 hrs/mo removed
99.6% sync accuracy
0 silent failures
Zero-downtime migrationMethod: compared baseline month to three-month post-launch average.
4x release cadenceMethod: measured from operational logs and stakeholder sign-off.
0Critical handover gaps at launch.
Before.
A critical internal app could not be safely changed by anyone except its original developer.
After.
The team regained release cadence without a high-risk rewrite.
What changed.
Documented dependencies, added tests, wrapped stable APIs and migrated in reversible phases.
Metric method.
Each metric is paired with the source used to measure it: workflow logs, finance reports, support queues or stakeholder-approved baseline snapshots. Final client-facing versions should include the approved measurement source and date range.
Handover artifacts.
- Architecture diagram and data ownership notes.
- Deployment and rollback runbook.
- Known edge cases and recovery paths.
- Training walkthrough for the internal owner.