Federated identity - Wikipedia
https://en.wikipedia.org/wiki/Federated_identity
OverviewManagementTechnologiesGovernment initiativesExamplesSee alsoIn information technology (IT), federated identity management (FIdM) amounts to having a common set of policies, practices and protocols in place to manage the identity and trust into IT users and devices across organizations. Single sign-on (SSO) systems allow a single user authentication process across multiple IT systems or even organizations. SSO is a subset of federated identity management, as it relates …
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