tl;dr
ERP integration is the connection between an enterprise resource planning system and other software, an AI accounting layer, a bill-pay tool, a reporting platform, so that data moves between them without manual export and re-entry.
For an AI accounting platform, the integration determines how much of the work can actually be automated. A system that reads from the ERP but can't write back to it, post a journal entry, update a vendor record, still leaves someone to do that last step by hand. Deep, two-way ERP integration is what lets automation reach all the way to done.
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