An institution still running a legacy core banking system gets a connector and migration layer: synchronization with the External ABS, reconciliation tooling, historical-data access, and a staged, institution-controlled cutover to Finance System's own ledger — never a single forced big-bang migration event.

• Connector-based synchronization with the External ABS
• Reconciliation before any account or product is cut over
• Account-by-account or product-by-product migration pace