What is CASB in the context of SASE?

In the context of Secure Access Service Edge (SASE), CASB stands for Cloud Access Security Broker. This is a critical component within the SASE architecture as it serves to enhance security for organizations that utilize cloud services. A CASB acts as a mediator between cloud service users and cloud applications, providing visibility and control over data transfers between them.

The primary function of a CASB includes enforcing security policies, ensuring compliance, and protecting sensitive data. It helps organizations manage the security risks associated with using cloud-based services by allowing for real-time monitoring and control of the data that flows to and from cloud applications. Additionally, a CASB typically integrates with various security tools, enabling a comprehensive approach to security that encompasses both on-premises and cloud environments.

In the context of the other options provided, they do not accurately describe the role or function of a CASB within SASE. Each of those alternative terms either does not correspond to a recognized concept in network security or misrepresents the function of cloud access security brokers. Thus, the choice that accurately reflects the role of CASB in SASE is indeed Cloud Access Security Broker.