Cybersecurity definition
What is CASB?
CASB stands for Cloud Access Security Broker.
By Cyber Tool Stack Editorial TeamUpdated
Definition
Sits between users and cloud applications to enforce visibility and data-protection policy — discovering unsanctioned app use and controlling what happens to sensitive data inside approved SaaS applications.
Where CASB fits in the security landscape
These beginner lessons use this term while explaining the surrounding security control.
Related cybersecurity terms
SASESecure Access Service EdgeAn architecture that converges networking (like SD-WAN) and security services (like SWG and ZTNA) into one cloud-delivered platform, replacing a stack of separate branch and data-center appliances.SSESecurity Service EdgeThe security-focused subset of SASE — ZTNA, SWG, and CASB delivered from the cloud — without the SD-WAN networking half, for organizations that want converged security without replacing their existing network connectivity.