The two capabilities of an identity provider that the architect should detail to help strengthen the business case are that the identity provider can authenticate multiple applications and that the identity provider can centralize enterprise password policy. These capabilities can provide benefits such as reducing login friction, improving user experience, enhancing security, and simplifying administration. Option B is not a good choice because the identity provider can authenticate multiple social media accounts may not be relevant for UC’s business case, as it does not specify how UC will use social media for its identity management. Option C is not a good choice because the identity provider can store credentials for multiple applications may not be desirable or secure for UC’s business case, as it may imply that theidentity provider is using password vaulting or federation rather than single sign-on (SSO) or identity federation. References: Identity Management Concepts, [Single Sign-On Implementation Guide]