What is Cloud Access Security Broker in Cybersecurity?
Cloud SecurityCASB
Version 1.0 · Published April 2026 · Last verified April 2026
How is it pronounced?
KAZ-bee/ˈkæz.bi/
Rhymes with 'has-bee'.
A cloud access security broker sits between users and cloud services to enforce security policies. CASBs provide visibility into SaaS usage, detect shadow IT, enforce data loss prevention rules, and manage access controls across cloud applications. They operate in inline (proxy) or API modes depending on the deployment model.
Why Cloud Access Security Broker Matters for Your Cybersecurity Career
Organizations use dozens to hundreds of SaaS applications, and CASBs are the primary tool for maintaining visibility and control over them. Security engineers who can deploy and manage CASB solutions help organizations reduce data leakage and unauthorized cloud usage. CASB skills translate directly to SASE and zero trust roles.
Which Cybersecurity Roles Use Cloud Access Security Broker?
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Looking for the acronym? Read about CASB in the cybersecurity acronym decoder
A cloud access security broker sits between users and cloud services to enforce security policies. CASBs provide visibility into SaaS usage, detect shadow IT, enforce data loss prevention rules, and manage access controls across cloud applications. They operate in inline (proxy) or API modes depending on the deployment model.
Organizations use dozens to hundreds of SaaS applications, and CASBs are the primary tool for maintaining visibility and control over them. Security engineers who can deploy and manage CASB solutions help organizations reduce data leakage and unauthorized cloud usage. CASB skills translate directly to SASE and zero trust roles.
Cybersecurity professionals who work with Cloud Access Security Broker include Security Engineer, Security Architect, GRC Analyst. These roles apply Cloud Access Security Broker knowledge within the Cloud Security domain.
Definitions are original explanations written for career development purposes. For authoritative technical definitions, refer to NIST, ISO, or the relevant standards body.
Last verified: April 2026?Report an inaccuracy
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