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Secure Multi-Tenant RAG for Enterprise Wiki

Design a centralized RAG-based assistant for a global conglomerate that has 50+ business units. Each unit has its own proprietary documents and strict permissioning structures (LDAP/AD). A user from Unit A should never see information retrieved from Unit B's documents, even if they share the same LLM endpoint. How do you design the ingestion and retrieval layers to guarantee security while maintaining high retrieval performance?

Key concepts

ragvector databaseaccess controlmetadata filtering

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