Agentic AI Reference Architecture

Orchestration · Software component

Rule-Based Transition Router

Software componentOrchestrationOrchestration & Toolsarc:RuleBasedTransitionRouter

A transition router that applies explicit, deterministic decision rules over state fields to select the next workflow operation.

Responsibility. Applies explicit rules over state to choose the next workflow operation.

Also known as: route_query function, Conditional edge routing function, Conditional edge, Routing function (should_continue_iteration), Quality-aware multi-path router

Variant of Transition Router abstract

When to choose. Choose when decision logic can be expressed as explicit rules over state fields.

routes toroutes toreadsis invoked byroutes toroutes tois configured byspecializesis target of alternativeTois target of alternativeToWorker Agent: routes toWorker AgentReasoning Engine: routes toReasoning EngineWorking Memory Buffer: readsWorking Memory BufferState-Graph Orchestrator: is invoked byState-Graph OrchestratorEscalation Handler: routes toEscalation HandlerFailure Analyzer: routes toFailure AnalyzerIteration Limit Policy: is configured byIteration Limit PolicyTransition Router: specializesTransition RouterHybrid Transition Router: is target of alternativeToHybrid Transition RouterLLM Transition Router: is target of alternativeToLLM Transition Router
Direct neighbourhood (hover for relationship types)

Relationships

is configured by structural

is invoked by dependency

reads dependency

routes to dynamic

alternative to variability

Design guidance

Classification

Technologies
LangGraph
Quality attributes
Reliability (ISO/IEC 25010 | NIST AI RMF: valid and reliable)
Risks mitigated
Untestable prompt-based routing

Sources

  1. Ch1.5A: T. Nguyen, "Stateful Orchestration - Introduction and Core Concepts," in Mastering Agentic AI Systems: Guide for the NVIDIA NCP-AAI Exam, 1st ed. 2026, ch. 1.5A. ISBN: 9798244538229.
  2. Ch1.5B: T. Nguyen, "Stateful Orchestration - Worked Examples," in Mastering Agentic AI Systems: Guide for the NVIDIA NCP-AAI Exam, 1st ed. 2026, ch. 1.5B. ISBN: 9798244538229.
  3. Ch2.1: T. Nguyen, "Framework Landscape and Selection," in Mastering Agentic AI Systems: Guide for the NVIDIA NCP-AAI Exam, 1st ed. 2026, ch. 2.1. ISBN: 9798244538229.
  4. Ch2.2: T. Nguyen, "LangGraph," in Mastering Agentic AI Systems: Guide for the NVIDIA NCP-AAI Exam, 1st ed. 2026, ch. 2.2. ISBN: 9798244538229.
  5. Ch2.3: T. Nguyen, "LangChain Sequential Frameworks," in Mastering Agentic AI Systems: Guide for the NVIDIA NCP-AAI Exam, 1st ed. 2026, ch. 2.3. ISBN: 9798244538229.