The Coupa Supplier Portal (CSP) is a free tool for suppliers to easily do business with their customers who use Coupa. The CSP makes managing customers and transactions easy. Depending on your customer's specific Coupa configuration, you can manage content and settings on a customer-by-customer basis, including: viewing purchase orders, setting up delivery methods, creating catalogs, sending invoices and advance ship notices (ASNs), checking the status of transactions, and more. How to ... Your Coupa Journey Whether you're just getting started on your Coupa journey or leading innovation in spend management best practices, Coupa is with you every step of the way. Coupa is an American technology company that provides cloud-based solutions for procurement, payment, and supply chain. Founded in 2006, it has over 3,500 customers and 10 million suppliers, and was acquired by Thoma Bravo in 2023. Drive profitability and growth across finance, procurement, and supply chain with Coupa's AI-driven Total Spend Management platform.