AI Agent Architecture — ReAct, Memory, Planning and Multi-Agent Systems · AI Agent — Architecture, Not a Chatbot
Three Pillars of an Agent: Planning, Memory, Tool Use
AI Agent — Architecture, Not a Chatbot
Introduction
Every AI agent rests on three independent but cooperating pillars: planning (how to decompose a goal into steps), memory (how to store and retrieve information), and tool use (how to reach beyond the LLM into the external world). This lesson analyses each of them — types, implementations, and interdependencies.