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Federated identity management has emerged as a strategic requirement to enterprises. Traditional approaches such as delegated administration or directory synchronization do not support many users and organizations. Current SAML, WS-Security, and Liberty Alliance specifications must generate an interoperable security protocol stack for federated identity management and Web services to succeed. This presentation addresses the need for enterprises to deploy federated identity in a secure, evolutionary manner by integrating it with existing identity and access management architectures.