Identity federation allows users to access services across multiple systems or organizations using a single set of credentials.
OAuth is a popular protocol for identity federation, providing secure delegated access to resources without sharing credentials.
SSO enables users to log in once and gain access to multiple interconnected systems without re-authenticating.
The IdP is responsible for authenticating users and sharing their identity information with service providers.
The SP uses the identity data provided by the IdP to authenticate users and grant access to resources.
