Episode 4. From On-Prem to Cloud (Again): How a Government Agency Made the Big Bang Work

May 28, 2025

Kris Peeters & Niels Melotte - The Data Playbook Podcast

A government client moved back to the cloud. Standardization made a 14h Big Bang migration secure, seamless and practically invisible.

What happens when a government agency spends millions to migrate off the cloud… and then decides to move back? This episode dives deep into a high-stakes, legally complex, technically ambitious cloud migration and how it succeeded thanks to smart engineering choices and platform standardization.

Niels Melotte, Data Engineer at Dataminded, shares the behind-the-scenes story: from GDPR and Schrems II compliance hurdles to rebuilding trust after on-prem outages, all the way to pulling off a 14-hour Big Bang migration with zero fallout. We also discuss purpose-based access control, data product thinking, and what makes a platform resilient in the public sector.

Whether you’re in government IT, responsible for cloud strategy, or just love hearing about infrastructure battle stories, this one’s for you.

:key:

Topics Covered:
- Schrems II and legal roadblocks to cloud adoption
- GDPR-compliant architecture with AWS Nitro Enclaves & external key stores
- Purpose-based access control and its real-world impact
- How standardizing with dbt enabled a seamless Big Bang migration
- Data platform reliability and stakeholder trust
- The limits of flexibility and the power of paved roads

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© 2025 Dataminded. All rights reserved.


Belgium

Vismarkt 17, 3000 Leuven - HQ
Borsbeeksebrug 34, 2600 Antwerpen

Vat. BE.0667.976.246

Germany

Spaces Tower One, Brüsseler Strasse 1-3, Frankfurt 60327, Germany

© 2025 Dataminded. All rights reserved.


Belgium

Vismarkt 17, 3000 Leuven - HQ
Borsbeeksebrug 34, 2600 Antwerpen

Vat. BE.0667.976.246

Germany

Spaces Tower One, Brüsseler Strasse 1-3, Frankfurt 60327, Germany

© 2025 Dataminded. All rights reserved.