This white paper discusses the most important industry standards that are becoming available for developers to build interoperable services and composite applications, including JAX-WS, BPEL, WS-ReliableMessaging, WS-Addressing, SOAP with Attachments, MTOM, WS-Policy, UDDI, WS-Security and Service Component Architecture. Oracle has helped to define these standards and is using them as the basic building blocks for the Fusion Middleware platform. Because the Oracle platform is built from the ground up on standards, developers can create portable and interoperable services that are guaranteed to work together. And because Oracle's SOA environment is based on a common service infrastructure that is shared across the entire Oracle Fusion Middleware product, developers benefit from out of the box integration with the full range of Oracle SOA technologies, including BPEL, Human Workflow, ESB, and Oracle Rules.