Which approach focuses on authenticating users across multiple domains and services to provide seamless access?

• A. Data management governance
• B. Federation solutions
• C. Implementing SoD
• D. Data classification policy

Answer: (B)

Federation solutions enable authentication across organizational boundaries by establishing trust between an identity provider and multiple service providers. When a user tries to access a resource in another domain, the IdP authenticates the user once and issues an assertion or token that the service provider accepts, granting access without re-entering credentials. This creates seamless access across domains and services, often through single sign-on, using standards like SAML, OpenID Connect, or OAuth. For example, an employee can sign in to the company identity system and then access cloud apps, partner portals, and SaaS services without multiple logins. The other options focus on data governance, internal controls, or data handling policies rather than cross-domain authentication and seamless access.