Fedlet is the name given to fedlet.war. The WAR is a very small archive of a few JARs, properties, and metadata (all stored in flat files) that can be embedded into a service provider's Java EE web application to allow for SSO between an identity provider instance of OpenSSO Enterprise and the service provider application - WITHOUT installing OpenSSO Enterprise on the service provider side. The service provider simply downloads the Fedlet, modifies their application to include the Fedlet JARs and, re-archives and redeploys the modified application. The service provider is now able to accept an HTTP POST (that contains a SAML v2 assertion) from the identity provider and retrieve included user attributes to accomplish SSO. (Currently, the Fedlet only supports the HTTP POST Profile.). The Fedlet can communicate with multiple identity providers, using a Discovery Service to find the preferred identity provider. For more information, see the Sun OpenSSO Enterprise 8.0 Administration Guide.