What is OpenSSO Enterprise?

Sun OpenSSO Enterprise (formerly Sun Java System Access Manager and Sun Java System Federation Manager) centralizes and enforces a comprehensive security policy for internal and external applications and web services. It provides secure and centralized access control and single sign-on (SSO) functionality. And it allows for federated identity management, which makes it possible to share applications with companies that have different directory services, security, and authentication technologies. Federated partners trust each other to authenticate their respective users and vouch for their right to access services.