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Boardroom Answers · AI & Data · AI, Data & Analytics

You are multi-tenant. Prove my data — and everything derived from it, embeddings, caches, insights — is isolated from your other customers, including inside the AI pipeline?

The question a Chief Data Officer (CDO) asks.

The short answer

Tenant isolation is enforced on every query in application code and machine-checked in the build, with row-level security as a second line — and it covers the AI derivatives too: embeddings, caches, and insights are all tenant-scoped by construction.

The full executive answer

Isolation is enforced by our application filtering every query to your organisation, and it does not depend on anyone remembering to: an automated cross-tenant test in our build pipeline fails if a tenant-table read loses its organisation filter. Every tenant-data table also carries row-level security as a second line, which refuses cross-tenant reads from anything connecting to the database directly, and a second static test fails the build if anyone adds a tenant table without that policy. The organisation identity used everywhere comes from the verified login token, never from anything a request claims about itself.

The derivatives follow the same rule, which is the part most vendors get wrong. Document chunks and their embeddings live in tenant-scoped tables. Cached insights are keyed by a fingerprint that includes your organisation’s identity, so one tenant’s cache can never serve another tenant’s question. Consensus runs, cost events, feedback, audit entries — all carry the tenant identity. And the prompt layer adds a belt to those braces: the model is instructed it has data for exactly one organisation, is forbidden to reference any other organisation by name, and — structurally — is only ever handed one tenant’s context anyway. Benchmarking across customers, where offered, runs on consented, aggregated statistics, never raw peer data in a prompt.

So the answer to "prove it" is: I can show you the security policy on the tables, the build gate that enforces policy coverage, and the tenant identity flowing from verified authentication — three artifacts, not assurances.

Grounded in: ISO/IEC 27001 Annex A (access control, segregation); GDPR Art. 32 (technical measures); NIST AI RMF GOVERN 1.4 — the same isolation posture extended into the AI pipeline’s derived data.

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