Your Prompts are Legacy Code Now: The Google Cloud Next '26 Developer Breakdown

The era of "chatting with an LLM" is officially legacy. I've attended the Google Cloud Next ‘26 Developer Keynote , and saw the pivot point. We aren’t just writing better prompts anymore; we are architecting Production-Ready Autonomous Systems . Google's showcase centered on a multi-agent system coordinating a full city-scale marathon simulation—Planner, Evaluator, and Simulator agents working in concert. But the marathon wasn't the point. The architecture behind it is what you need to steal for