RAG Architecture Three Architectural Tiers | Tier | Components | Best For | Complexity | |---|---|---|---| | Naive RAG | Chunk + embed + top-K + stuff | Prototype, < 10k docs, homogeneous content | Low | | Advanced RAG | + query rewriting, hybrid search, reranking, metadata filters | Production, heterogeneous content, 10k docs | Medium | | Agentic RAG | + self-reflection, retrieval-as-tool, multi-hop, corrective fallback | Complex research, multi-source synthesis, high-stakes answers | High | Naive RAG Pipeline Single failure mode: bad retrieval = bad answer. No recovery path. Works for well-…