Genedata. Deployed and used.

Insurance data outlives the systems that produce it. A policy written today generates claims for years and development triangles for a decade, so a change to how loss is coded quietly invalidates comparisons made against earlier years. Underwriting, claims, and actuarial each need the same policy and loss record, and each traditionally kept its own copy.

Retirement projection is a regulated-adjacent calculation on personal financial data: the inputs are sensitive, the arithmetic has to be reproducible years later, and two countries' rules have to coexist without leaking into each other's results. A projection a customer saw last quarter has to be reconstructable under the assumptions in force then.

Compliance evidence is usually assembled by hand before an assessment and discarded afterwards, which makes control effectiveness a sampling exercise rather than a measurement. The evidence a framework asks for is mostly already produced by the systems being assessed — the problem is that it is not retained in a form anyone can query.

A SOC's hunt quality is bounded by what it can afford to retain. Per-gigabyte ingest licensing creates pressure to drop the log source that turns out to matter, and cold storage that needs rehydrating turns a scoping question into a next-day answer.

Club operations run on systems that were never designed to agree with each other: point of sale, room bookings, membership, and billing each hold part of a member's activity, and the member-facing view has to reconcile all of them. A member who dined on Tuesday and stayed on Wednesday is two unrelated rows until something joins them.