Direct answer

What happens to my data when I replace a SaaS tool with a custom system?

Bottom line

Your data is migrated before you switch, not after. We export your records from the old tool, transform them into the new data model, and run a full parallel test period where your team can verify the new system against the old one. Only when you are satisfied do we cut over. The old tool keeps running throughout, so your team is never operating blind. After cutover, your data lives on your own isolated instance, exportable anytime: yours permanently, with no vendor holding it.

Side-by-side comparison

Staying on the SaaSReplacing it: your own system
Where your data livesVendor servers: accessed on their terms, exported in their formatYour own isolated instance: your database, your format, exportable anytime
During the buildNo change: your data stays on the SaaS as normalWe build the new data model and migrate your data before go-live
Migration riskNot applicableLow: we run old and new in parallel and verify before cutover
What is migratedNot applicableAll records, history, attachments, user accounts, templates, and configurations
If you stop paying the SaaSAccess gone immediately; export window often time-limitedIrrelevant, your data is already on your own system
GDPR / EU data residencyDepends on the vendor: US hosting is commonEU data residency by default: encryption in transit and at rest, daily backups
Perpetual accessGone if you stop payingPerpetual, escrow-backed licence: your access is contractually protected even if we ever stop trading

Related questions

We use whatever export format the old tool supports: CSV, JSON, API export, and transform it into the new system's data model. Your records look the same in the new system as they did in the old one, plus any structural improvements you have asked for.

Sources

  • Rollout IT data migration practice (50+ project migrations, 2018–2025)
  • GDPR Article 20: Right to data portability
  • Rollout IT build scope documentation

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