Two Banks, One Platform, Zero Compromise

How a major German financial institution centralized encryption across two sovereign business units — replacing desktop ZIP tools with a cloud-native platform, honoring strict data residency, and migrating without disruption.

Key Points

  • Governance, restored at the gateway — encryption moved off the desktop and into the cloud, so every secure message now flows through the hygiene scanning and DLP controls DACH compliance demands, closing a gap the endpoint approach left wide open.
  • True digital sovereignty, drawn by region — separate AWS deployments in Ireland and Germany kept each business unit’s data exactly where its governance required, satisfying strict residency mandates without forcing one division’s rules onto the other.
  • Two strategies, one platform — the main bank chose portal-less shared passphrase delivery through a custom Microsoft 365 add-in, while the investment arm ran automated S/MIME via DigiCert with Mimecast DLP and a single-button add-in — all under unified, standards-based control.
  • Standards-based and seamless — native PDF, Microsoft Office, and ZIP encryption meant external contacts kept working in the tools they already trust, with nothing proprietary standing between the bank and its partners.
  • Zero-disruption migration — both divisions moved off Totemo with full feature parity and familiar workflows intact, so the people who depend on secure communication every day never had to relearn a thing.

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The lesson is clear: with the right cloud-native platform and a trusted partner, even the most complex, multi-unit institutions can unify encryption, honor sovereignty, and modernize without friction — all at once. For the world’s most regulated organizations, secure communication is no longer a background function. It is part of the operating model, a cornerstone of resilience, and proof that data stays where it should, protected by controls that never look away.

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