Best AP automation systems for enterprise companies

Hi everyone! I’m researching enterprise-grade accounts payable automation platforms and would love feedback from teams that have implemented these at scale. We’re looking for a solution that can handle high invoice volumes, complex approval workflows, global vendor payments, and integrations with ERPs like NetSuite or SAP. Bonus points if it includes fraud prevention, audit trails, and compliance support out of the box.

Here are a few platforms I’m currently evaluating based on G2 reviews:

• Tipalti: Known for supporting global AP operations, tax compliance, and multi-entity management. For those using it at scale—how long did implementation take, and how well does it integrate with your existing systems?
• MineralTree: Offers strong automation for invoice processing, payment workflows, and fraud protection. Is it flexible enough for complex approval hierarchies across departments?
• Coupa: Coupa seems like a powerhouse with end-to-end procurement and AP functionality. Curious if it’s overkill for AP-only use, or if the added spend visibility justifies the investment.
• AvidXchange: Focuses on AP for mid-to-large companies with tailored workflows and payment processing. If you’ve used it, how’s the support and reporting at the enterprise level?
• SAP Concur Invoice: Integrated with the SAP ecosystem, this looks like a logical choice for Concur or SAP users. Does it provide enough automation and usability for finance teams beyond T&E?

If your company has implemented any of these—or switched from one to another—I’d love to hear what made the biggest difference. What did you wish you knew earlier in the process? And would you make the same choice again today?

Thanks in advance for sharing your experience!