Which technology is used to manage identity access management by building trust relationships between organizations?

The technology used to manage identity access management by establishing trust relationships between organizations is federation. Federation allows different organizations to share identity and access management capabilities, which enhances the user experience by enabling users to access resources across multiple domains with a single set of credentials. This is particularly beneficial in environments where organizations collaborate or when services are provided by third parties.

Federation operates based on a trust relationship, wherein one organization trusts the identity assertions made by another. This trust is established through protocols and standards such as Security Assertion Markup Language (SAML) or OAuth, facilitating secure access and seamless integration without the need for multiple logins across platforms.

In contrast, single sign-on focuses on allowing users to authenticate once and gain access to multiple applications, yet it does not specifically cover inter-organizational trust. Multifactor authentication enhances security by requiring multiple forms of verification but doesn't inherently create trust relationships across organizations. Biometric authentication uses physical attributes for user verification but is also concentrated on individual access rather than managing inter-organizational trust.