Establish knowledge ownership before choosing a model
Every source needs an owner, access policy, validity window and update cycle. Without that contract, a RAG system only retrieves contradictory information faster.
Evaluate retrieval separately from answer generation
Measure chunking, metadata coverage, ranking and source citation independently. This separation shows whether a failure belongs to the data, retrieval layer or generation model.
Enter production with a bounded scope and baseline
Choose one domain, a set of real questions, acceptance criteria and a human feedback path. Then monitor cost, latency, unsupported answers and quality drift over time.