CASB (Cloud Access Security Broker) is defined as a cloud-hosted software or on-premises software or hardware that enacts as an intermediate between users and cloud service providers. The goal of a CASB is to address gaps in security and extend it across software-as-a-service (SaaS), platform-as-a-service (PaaS), and infrastructure-as-a-service (IaaS) environments. In addition to providing visibility, a CASB also allows organizations to expand the reach of their security policies beyond its existing on-premises infrastructure to the cloud and create new policies for cloud-specific context. In other words, a CASB helps to enforce security, governance, and compliance policies for all your cloud-related applications.
Today, CASBs are a vital part of any enterprise security, as it allows businesses to safely use the cloud while protecting sensitive official data.
Many CASB security features are unique when compared to those offered by other security controls such as enterprise/web application firewalls and secure web gateways. Other benefits include:
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