The platform provides a user-friendly interface that will seem intuitive for anyone who shops online. Like eBay or Amazon, Ariba supports both sellers and buyers. The platform provides sellers with the ability to manage catalogs, bids, purchases and invoices and it provides buyers with the ability to search for suppliers, negotiate savings, procure goods and services and track spend. Unlike consumer marketplaces, however, Ariba has additional features to help with RFQs, RFPs, RFOs, compliance and other business concerns. roughly 1.5 million companies use the Ariba Network, according to SAP.