A Cloud Access Security Broker (CASB) solution is a cloud-based security policy enforcement point, placed between cloud service users (e.g. employees) and cloud service providers to enforce your company’s security policies.
With a CASB solution you get a single cross-cloud platform to gain visibility into cloud usage and risks, meet compliance requirements, enforce security policies, and detect and respond to potential threats.
According to Gartner - "Security leaders should deploy CASB for the centralized control of multiple services that would otherwise require individual management"
