Query Routing Isn't a Buzzword. It’s the Only Way to Run LLMs at Scale in 2026 Let me cut through the noise for you. For the last two years, every engineering blog and LinkedIn post has been screaming about "AI infrastructure." But most of it is fluff. They talk about vector databases, fine-tuning, and RAG like they’re magic spells. They are not. The real, unglamorous, and brutally effective...