Google ADK 2.0 deterministic agent workflows

Google ADK 2.0 promotes graph, dynamic, collaborative, and human-in-the-loop workflows so production agents can use deterministic control flow around LLM calls. Why it matters: The useful pattern is architectural: keep routing, retries, fan-out, and review gates explicit, and reserve model reasoning for ambiguous steps.

Try this: Sketch one agentic process as nodes and edges before adding prompts: deterministic steps first, LLM nodes only where interpretation or synthesis is needed.