This white paper describes how to integrate on-premise and cloud applications, including Oracle Cloud applications, with this type of pragmatic, universal perspective. While Oracle, Salesforce, and Workday are used as examples, the principles apply to many vendors. The hub for these integrations are the Oracle SOA Suite and Oracle data integration products, part of Oracle Fusion Middleware, a unified platform that accommodates all types of information systems, deployment models, SaaS vendors, and Platform as a Service (PaaS) infrastructure, anchored by a cohesive set of tools for development, management, security, and governance.