What are two pillars of CASB?

Two pillars of CASB are visibility and compliance. CASB stands for Cloud Access Security Broker, which is a solution that provides visibility and control over cloud services and web traffic, as well as data and threat protection for cloud users and devices. Visibility is the capability to identify all cloud services in use and assess their risk factors, such as security, auditability, business continuity, etc. Compliance is the capability to ensure that cloud services and data meet the regulatory standards and policies of the organization or industry, such as GDPR, HIPAA, PCI DSS, etc. References: What Is a Cloud Access Security Broker (CASB)? | MicrosoftCASB Guide: What are the 4 Pillars of CASB? - Security Service Edge