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AWS Machine Learning Blog · Sep 29, 2026 · Engineering Insights

RAG fails at portfolio-scale aggregation; structured extraction into a database is the fix

“The answer is structured extraction, not better retrieval.”

An AWS blog post details why RAG-based AI chat tools fail for portfolio-scale document questions that require aggregation across hundreds of contracts. The proposed architecture uses AI agents to extract structured data into a database, then answers questions via analytics and natural language querying rather than semantic search. The insight—that aggregation problems require structured extraction, not better retrieval—is a broadly applicable engineering principle for enterprise document AI.

RAG limitations document intelligence Amazon Bedrock multi-agent enterprise AI structured extraction

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