A cloud access security broker (CASB) solution is the best way to enforce access control for an organization that uses multiple cloud technologies, as it provides a centralized and consistent platform to manage and monitor the access to various cloud services and applications. A CASB solution can help to implement and enforce the enterprise's access policies and standards, as well as to detect and prevent unauthorized or malicious access attempts. Senior management support of cloud adoption strategies, creation of a cloud access risk management policy, and expansion of security information and event management (SIEM) to cloud services are not the best ways to enforce access control for an organization that uses multiple cloud technologies, as they do not provide the technical capabilities or tools to manage and monitor the access to various cloud services and applications. References = CRISC by Isaca Actual Free Exam Q&As, question
210; CRISC: Certified in Risk & Information Systems Control Sample Questions, question 210.