For EU banks, data residency and GDPR aren’t checkboxes — they’re structural constraints on which vendors are even viable. A tool that requires shipping personal data to a third-party cloud starts every procurement conversation at a disadvantage. Architecture can remove the disadvantage entirely.
The problem with “trust us” residency
Many vendors offer residency as a promise: your data will be stored in a specific region, processed under specific terms. That promise is only as strong as the audits behind it, and every sub-processor in the chain widens the exposure. Under GDPR, the controller is still accountable for all of it.
Residency as an architectural fact
A cleaner answer is to never create the external copy. With KeplerAI’s control-plane / data-plane split, personal data stays inside your environment. The control plane processes only metadata and account information. There’s no regional-storage promise to audit because there’s no external data store.
That reframes the GDPR conversation:
- Data flows are trivial to map — raw data doesn’t flow out.
- Sub-processor risk shrinks to metadata handling, not personal-data processing.
- Data-subject rights (access, erasure) act on data you already control.
What still needs care
Architecture handles the biggest risk, but not all of it. You still define what metadata (if any) may transit, document processing in your records, and — for the strictest cases — choose a 100% local isolation tier where even metadata stays home. Those are contractual and configuration choices layered on top of an already-sovereign base.
The procurement advantage
When your architecture keeps personal data in-country by construction, security and DPO reviews get shorter, not longer. You spend the meeting confirming a design instead of negotiating a promise.
Residency you can point to beats residency you have to trust. Explore the security model.