Providing temporary use of non-downloadable computer software for creating, delivering and receiving invoices, displaying invoices and bills, and allowing for the payment of invoices; providing temporary use of non-downloadable computer software for viewing, monitoring, and resolving disputes regarding invoices; providing temporary use of non-downloadable computer software for procurement and management of contracts for the purchase of goods and services, creating and delivering invoices and bills, tracking and management of bill and invoice status, and allowing for the payment of invoices; providing temporary use of non-downloadable computer software for use in the procurement and ordering of goods and services, and inventory management; providing temporary use of non-downloadable software for use in administration, billing and reconciliation of accounts; providing temporary use of non-downloadable software for use in data integration, scheduling, workflow management, and orchestration