The same checklist, the same controls and the same audit trail on each engagement — so a reviewer moving between clients is not learning a new system each time.
Identical close checks and tie-outs on every client, so quality is a property of the system rather than of who staffed the job.
An append-only audit log, attributed approvals and waivers with stated reasons — the evidence a review needs, already collected.
Each client is its own organization with no code path to another's data.
Each of these is a product page describing code that exists.
A seeded company, a close in progress, and every number computed by the engines.