Everything so far, assembled. Each lesson is one complete design worked through the six-step method — requirements, numbers, architecture, failure, cost, security — with every box named and every number shown. Read them as models for your own design documents.
| # | Lesson | The system |
|---|---|---|
| 01 | AI Infrastructure for an Agentic Platform | A company-wide platform on which teams run coding, support and research agents: gateway, agent runtime, sandboxes, tools, self-hosted and hosted models, GPUs |
| 02 | An Enterprise RAG Assistant | Question answering over 20 million internal documents with per-user permissions |
| 03 | The Design Review | How to review an AI design — yours or someone else’s — and practice prompts to work alone |
The numbers are illustrative and the arithmetic is real. Rerun the programs with your own figures; the conclusions change with them, which is the point.