End-to-end accounts payable automation from invoice receipt to ERP posting, with a finance team member touching a keyboard only for genuine exceptions that require judgement. Invoice capture: an email inbox monitor processes every invoice-containing email as it arrives; a shared document portal accepts drag-and-drop uploads from vendors and internal requestors; EDI feeds from suppliers with structured invoice formats bypass extraction entirely. AI extraction using Azure Document Intelligence or AWS Textract reads vendor name, invoice number, date, line items with quantities and unit prices, tax amounts, payment terms, and total, then GPT-4o validates the extracted fields against expected patterns for that vendor and flags anomalies before matching begins. Three-way match logic: invoice line items matched against the open PO (by PO number or vendor + approximate amount) and the goods receipt record; tolerance rules configurable per vendor and per category (e.g., 2% variance acceptable for freight invoices, 0% for fixed-price services). Discrepancy routing: invoices failing match are routed to the purchasing manager who raised the PO with the invoice, PO, and variance highlighted side-by-side, approver responds via email or the approval portal; their decision is logged with timestamp and user ID. NetSuite, SAP, Xero, QuickBooks, and Sage ERP posting via API: approved invoices written to the correct vendor account, cost centre, and tax code with the PO reference attached, no re-keying. Typical outcome: 80-90% of invoices processed straight-through; finance team reviews only the 10-20% with genuine discrepancies.