A healthcare provider needs to grant physicians from a partner hospital access to its new cloud-hosted electronic health record (EHR) system. The provider wants to allow the partner physicians to use their existing hospital credentials to log in, avoiding the need to create and manage a separate set of accounts. Which identity and access management concept BEST facilitates this requirement?
Federation is the correct concept as it establishes a trust relationship between different organizations (the healthcare provider and the partner hospital), allowing users from one organization to use their credentials to access resources in the other. Single Sign-On (SSO) is primarily for accessing multiple applications within a single organization's security domain. Privileged Access Management (PAM) is used for managing and securing accounts with elevated permissions, not for enabling cross-organizational user access. A Cloud Access Security Broker (CASB) is a security policy enforcement point for cloud services, but it does not create the underlying trust relationship between the two organizations' identity systems.
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How does federation differ from Single Sign-On (SSO)?
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What are common protocols used in federation?
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What are examples of real-world use cases for federation?