Financial services accounting hub
The core system stays. The books become Dynamics 365.
Banks, lenders and insurers whose operational core is not the ledger.
A core banking, lending or insurance system that does not talk to the ledger grows a team whose job is to summarise the day into journals. IFRS then lives in a workbook. The blueprint is an accounting hub: sub-ledgers post under rules, every source transaction keeps an audit trail, and payments leave through one gateway.