Isolation must include the information path
A multi-tenant AI service can share computing infrastructure while handling information for different organizations or users. Map where inputs, retrieved content, generated outputs, and operational records travel. A separate application account does not prove that every downstream component keeps the same boundary. Define the intended tenant separation and the permitted uses of information. Privacy and legal obligations vary, so a general architecture description should not be represented as a compliance guarantee for every customer or jurisdiction.
Enforce permissions outside model reasoning
The model should not decide whether a user may retrieve another tenant’s records. Use trusted service controls to authenticate the caller and authorize access to the actual resources. NIST’s zero-trust principles are relevant because network location alone should not grant permission. OWASP also recommends memory and context isolation for agents. Apply those boundaries to tools, retrieval, caches, and administrative support paths rather than assuming that a prompt instruction is sufficient to prevent information disclosure.
Review logs and support copies
Troubleshooting captures, evaluation datasets, and exports can create additional copies outside the primary application. Define their purpose, access, retention, and deletion arrangements. Minimize sensitive information in agent context and telemetry. When a provider or integration changes, reassess the data routes rather than assuming that an approved primary path authorizes every alternative. A useful review includes the people and services that can access the data, not only the location where the main model runs.
Test cross-boundary behavior deliberately
Use authorized scenarios covering denied retrieval, conflicting identities, revoked permissions, and unavailable policy services. Check whether the system fails according to the approved design instead of exposing information through an undocumented fallback. Preserve relevant evidence without retaining unnecessary tenant content. Future network capabilities can support new service arrangements, but trustworthy multi-tenancy still depends on explicit permissions, proportionate collection, consistent isolation, and accountable handling throughout the complete information lifecycle.