IDEAS, DECISIONS & LESSONS

Journal

Notes on AI, architecture and building useful products.

94 articles

09 May 2026 · 15 min read

agentic-ai

The Evolution of AI Agentic Patterns: From Prompts to Production Systems

How the central question of building with AI has shifted three times in four years — from 'what should I say?' to 'what system should I build?' A deep dive into prompt engineering, context engineering, and harness engineering with architecture diagrams, decision frameworks, and production lessons for engineering leaders.

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