Coupa has completed its integration with expense audit startup AppZen. Coupa clients can connect their accounts to AppZen through the CoupaLink application programming interface platform. AppZen audits all travel expenses for fraud in real time using artificial intelligence. It can analyze a traveler's historical expense submission data to identify unusual patterns, recurring bad behavior and duplicate receipts. It also scours the Internet to confirm acceptable merchants and flag questionable meal and meeting participants. AppZen has partnered with Concur since 2016, but last year, AppZen CEO Anant Kale told BTN his company planned to add expense partners, including Chrome River and Expensify.