concept:build-vs-buy

Build Vs Buy

Build Vs Buy in the context of production machine-learning systems.

Lessons

Formal explanations, examples, simulations, and checkpoints.

Prompt, retrieve, adapt, train, or buy?

Match the intervention to the failure: prompts shape instructions, retrieval updates knowledge, tuning shapes behavior, and training or buying changes base capability.

Foundation-model lifecycle

Corpus provenance, mixtures, and decontamination

Corpus quality is governed by provenance, realized sampling, and auditable exclusions—not merely by token count.

Courses & assignments

Dependency-authoritative learning units.

Casebook

Reported facts and course reconstructions.