Most ERPs are decades-old suites that were moved to the cloud without being rethought. Finance, inventory, HR and procurement each keep their own copy of the truth, and a nightly job tries to reconcile them.
Zunu is built the other way round. There is one data layer, and every module is a view over it.
What that buys you
A posting in finance propagates to inventory valuation, procurement commitments and management reporting in about 0.4 seconds, because nothing has to be copied. There is no sync, so there is nothing to fall out of sync.
The cost of the decision
A single data layer means schema changes are never local. Adding a field is a conversation across every module that touches it. We accepted that friction deliberately: it is paid once at design time, instead of every night for the life of the system.
Arc, the AI coworker, sits on the same layer. It can answer questions across modules because, underneath, there are no modules.