A fictional distributor replaces its warehouse while a search index and a prediction model depend on the old outputs. Contracts, dual running, reconciliation, and a coded cutover rule decide when each consumer moves.
A worked, fictional prediction service built and run locally. A leaky and a point-in-time feature pipeline are compared, the service is evaluated and released as a bundle, and a feed stall and a defective release are detected and recovered.
A worked, fictional rollout of an AI coding assistant. Scoped credentials, a gated execution environment, a staged CI gate, and a randomized pilot are built and run locally, and a pre-agreed gate turns the evidence into a decision.
A fictional company’s refund and reshipment agent, built and run locally: delegated credentials, approvals tied to one call, crash-safe steps, reconciliation with the ledger, and a policy-release incident drill.
A fictional company’s search over restricted, changing documents, built and run locally: permission propagation windows, pre-filtering, citations, shadow and canary release, rollback with revocation replay, and erasure.