At the Federal Ministry of Works, I led a data migration across 4 government directorates. The requirement: zero data loss, zero downtime, zero audit findings.
The Challenge
- 10,000+ records
- 4 different directorates
- No system downtime allowed
- Government audit requirements
The Solution
Saturday Cutover Plan:
| Time | Action |
|---|---|
| 6:00 AM | Start migration |
| 7:00 AM | Backup source data |
| 11:00 AM | Load to new system |
| 2:00 PM | Switch over |
Rollback ready at every step.
Results
- Zero data loss
- Zero downtime
- Zero audit findings
- Audit prep: 3 weeks → 3 days
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