| Specification or Technology | Description |
| WS-I Basic Profile | Clarifies and amends key nonproprietary web-services specifications (e.g., SOAP, WSDL, UDDI) to promote interoperability across web-services implementations. |
| WS-Security | Specifies mechanisms for protecting the integrity and confidentiality of web services (e.g., authentication, authorization, policy representation, and trust negotiation). |
| WS-Addressing | Specifies transport-neutral mechanisms to address web services and messages (i.e., identifying web-service endpoints and securing end-to-end endpoint identification). |
| WS-Resource Framework (WSRF) | Defines a generic framework for web services to model and access stateful resources. |
| WS-Notification | Specifies a pattern-based approach for distributing information between web services. |