Although the Secure Attributes Exchange feature in OpenSSO Enterprise makes it easier to implement identity federation among legacy applications, a SAMLv2–compliant Service Provider must already be in place. The Service Provider can be OpenSSO Enterprise or any other vendor solution. But even a small Service Provider requires an identity federation-aware software infrastructure in order to make use of Secure Attributes Exchange.
An alternative to Secure Attributes Exchange is to enable identity federation using the OpenSSO Enterprise Fedlet. The Fedlet is a streamlined Service Provider implementation used to quickly and simply enable identity federation. The Fedlet does not require the installation of any other identity federation software components such as the OpenSSO Enterprise server. For more information about the Fedlet, see Chapter 5, Using the OpenSSO Enterprise Fedlet to Enable Identity Federation