Phase 1: Topologies & Roles · ~60 minutes · Python (stdlib)

Hierarchical Architecture and Its Failure Mode

Hierarchical is supervisor nested.

Hiring signal: Can operate hierarchical architecture and its failure mode in production

Introduction

Manager agents over sub-managers over workers. CrewAI Process.hierarchical is the textbook version: a manager_llm dynamically delegates tasks and validates outputs. The LangGraph equivalent is create_supervisor(create_supervisor(...)). It is the natural pattern when the task is a real org chart. It is also the pattern most likely to collapse into managerial looping — manager agents assign work poorly, misinterpret sub-outputs, or fail to reach consensus. Sequential often beats it.

Type: Learn + Build Languages: Python (stdlib) Prerequisites: Phase 16 · 05 (Supervisor Pattern) Time: ~60 minutes

Objective

Learning objectives

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Key terms in this lesson

Agent