Lending ontology
A lending ontology is one canonical model of the loan (borrower, application, repayment, and risk, plus the relationships between them) that the whole lending stack reads and writes through, instead of a separate copy of the loan in every system.
Where most stacks keep the loan as five drifting copies (LOS, LMS, core/GL, collections, warehouse) that have to be reconciled, a lending ontology resolves them into a single canonical loan object on a deterministic core. Governed AI and people act on the same truth, every change is logged on one append-only trail, and the book can sharpen itself the more it lends, because every outcome writes back to the same model.