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Time to study: 22 min
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Practical Reference: AI Agent Architecture in 2026

A production reference for autonomous agent architectures: six system layers, five orchestration patterns, memory tiering, loop circuit breakers, and a production readiness checklist.

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Explore practical workflows, core terminology, and engineering tools

Practical Guide

Part I. AI Agent Architecture: The Foundations

The eleven foundational building blocks of modern autonomous agents: model taxonomy, the agentic runtime loop, advanced prompting, distillation, skills architecture, memory systems, function calling, and FinOps.

Practical Guide

Part II. AI Agent Architecture: From Model to Memory and Tools

A deep engineering dive: tokenization, KV-cache, sampling determinism, the training stack, quantization, context engineering, the safety stack, production RAG, ReAct, and multi-agent swarm systems.

Glossary Concept

Agent-to-Agent Protocol (A2A)

An open standard for network interaction, decentralized discovery, and secure context exchange between independent AI agents across various vendors and platforms.

Glossary Concept

Subagent Delegation Architecture

A hierarchical architectural pattern for building complex AI systems. Instead of attempting to solve everything with a single universal language model, a main orchestrator agent (Router/Manager) breaks down tasks and delegates them to specialized subagents (Researcher, Coder, Critic).

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