What describes the deployment of an API-based Cloud Access Security Broker (CASB)?

The deployment of an API-based Cloud Access Security Broker (CASB) is accurately described as an API-based CASB that brokers connections. This type of CASB utilizes APIs to facilitate secure interactions between cloud services and on-premises security controls, enabling organizations to enforce security policies and gain visibility into cloud application usage without relying on traditional proxy methods.

By leveraging APIs, the API-based CASB can directly interact with cloud services to perform actions such as monitoring and enforcement of security policies, identity access management, and data protection. This approach allows for a more comprehensive and seamless integration into existing cloud environments, making it particularly effective in environments where users are continuously accessing multiple cloud-based applications.

In contrast, the other options do not capture the specific functionalities and advantages that an API-based CASB offers. For instance, a security appliance positioned at the client network edge or a proxy positioned at the cloud network edge typically relates to traditional security measures that may not be as effective in the rapidly evolving cloud landscape. Additionally, while proxy support can be beneficial in certain scenarios, it's not a defining characteristic of how an API-based CASB operates, making it less relevant to the core capabilities and deployment model of an API-based CASB.