A Service Provider (SP) is an entity that provides Web services.
A Service Provider relies on a trusted Identity Provider (IdP) or Security Token Service (STS) for authentication and authorization. In Web Service Federation (WS-Federation), a Service Provider is called a “Relying Party” (RP). In SAML, which is the XML-standard for exchanging data, the security domains that information is passed between are a Service Provider (SP) and an Identity Provider (IdP). SAML’s Service Provider (SP) depends on receiving assertions from a SAML authority or asserting party, a SAML Identity Provider (IdP). Other Service Provider technologies important to Identity Management include Software-as-a-Service (SaaS), software offered using an Application Service Provider (ASP) and Cloud computing providers.
The WSO2 Identity Server allows you to add service providers and specify various details which help you to link the service provider to the identity server. This section contains the following topics.