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What is query routing in a RAG/agent system, and how do you decide where a query should go?

Forcing every query through the same pipeline burns latency, money, and precision. A router decides what each query actually needs. The signal is naming the four decisions a router makes and how you keep a misroute from sinking the answer.

Updated Aug 2026 · Grounded in real Applied AI Engineer interview loops and written to a senior-engineer editorial bar.

Forcing every query through the same pipeline burns latency, money, and precision. A router decides what each query actually needs. The signal is naming the four decisions a router makes and how you keep a misroute from sinking the answer.

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