Production patterns for building LangGraph StateGraph workflows deployed on AWS Bedrock AgentCore. Covers graph design, interrupt-based human-in-the-loop, multi-day checkpointing, 3-tier model routing with fallback chains, confidence calibration implementation, Cedar policy enforcement for agent authorization, cost-aware pipeline design, AgentCore Runtime deployment, Bedrock Foundation Models and Guardrails, MCP tool integration via AgentCore Gateway, and observability with LangSmith and CloudWatch. Use when building agentic AI workflows with LangGraph, deploying agents on AWS Bedrock AgentCore, or implementing interrupt-based HITL workflows.