Building Zero-Data-Leakage Enterprise RAG on Private VPCs with Qdrant and Cohere Rerank
VPC network isolation, semantic chunking boundaries, and strict BM25 + dense hybrid search benchmarks preventing LLM token leaks across multi-tenant silos.
Written by
Samantha Vance
Verified ProHead of AI
Samantha Vance writes about ai & security from the GrowBig IT engineering floor.
Section // 01
Overview
Enterprise RAG is not a vector database problem until it is a compliance problem. We isolate retrieval inside the customer VPC, keep embeddings and rerank calls on private endpoints, and enforce tenant-scoped collection names so a malformed query cannot cross silo boundaries.
Section // 02
Key Insight 01
Chunking strategy matters more than model choice. Semantic boundaries aligned to document sections, plus BM25 scoring for exact identifiers, consistently beat naive fixed-window chunking in our retrieval benchmarks.
Samantha Vance
Head of AI
Samantha Vance writes about ai & security from the GrowBig IT engineering floor.
Engineering Playbooks // Continue Reading
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