Cloud Access Security Broker (CASB)

Cloud Access Security Broker (CASB) software helps organizations monitor, control, and protect the use of cloud applications and services across their environment. It sits between users and cloud platforms to provide visibility into activity, enforce security policies, and reduce risk as data moves outside the traditional network perimeter. Businesses often look for the best CASB software when they need a clearer view of shadow IT, data sharing, and access patterns across SaaS, IaaS, and other cloud services.

Security teams, IT administrators, compliance managers, and risk professionals typically use CASB tools to support secure cloud adoption and meet internal governance requirements. Common use cases include discovering unauthorized apps, protecting sensitive data, managing user access, detecting suspicious behavior, and applying policies for file sharing or device use. These platforms are especially useful for organizations with distributed workforces or complex cloud environments.

Typical features include activity monitoring, data loss prevention, encryption or tokenization controls, threat detection, access governance, and compliance reporting. By centralizing cloud security oversight, top CASB tools can help reduce exposure, improve audit readiness, and make it easier to enforce consistent policies across multiple cloud services.