How does a CASB integrate with an IdP and what benefits does SSO bring to security operations?

• A. CASB integrates with IdP for centralized authentication and policy enforcement; SSO reduces credential reuse and improves visibility.
• B. CASB replaces IdP entirely.
• C. SSO has no security impact.
• D. IdP is unnecessary when using CASB.

Answer: (A)

A CASB relies on the identity already established by an IdP to control access to cloud services and apply policy, using federation protocols like SAML or OpenID Connect so the IdP handles authentication and the CASB receives identity context to enforce permissions and session controls. With Single Sign-On, a user authenticates once to the IdP and obtains a token or session that is trusted across multiple cloud apps. This streamlines login, reduces password reuse and the associated risks, and gives security operations a clearer, centralized view of who is accessing which services and when. It also makes it easier to enforce strong MFA and conditional access at the IdP level, and the CASB can correlate logs and events across cloud apps for faster detection and response. In essence, the CASB uses the IdP for identity and policy context, while SSO enhances security operations by simplifying authentication, improving governance, and boosting visibility.