Commerce Systems
What is the difference between an OMS, an ERP, and an inventory system?
An inventory system counts stock. An order management system takes orders from every channel and decides how each is fulfilled, holding the inventory position they sell against. An ERP is a finance-first system of record that extends into operations. The categories overlap, and the useful question is which one owns each record.
Overlap causes most integration pain. When two systems both believe they own inventory, what gets built is a reconciliation process, called an integration, that never finishes.
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