Which of the new or enhanced features of the Cisco ISE posture service provides posture information to clients, and completely removes itself when finished?

The feature that provides posture information to clients and completely removes itself when finished is Agentless Posture. This functionality is designed to perform posture assessment without requiring a dedicated agent installed on the endpoint device. Instead, it uses native protocols and capabilities available on the device to gather posture information.

When utilizing Agentless Posture, the assessment process is initiated from the Cisco Identity Services Engine (ISE) and leverages the capabilities of the device itself, such as system attributes, software configurations, and compliance checks. Once the validation process is complete, there are no residual components left on the endpoint, meaning it entirely removes itself after providing the necessary information. This offers a streamlined and unobtrusive way to assess device compliance with security policies, making it ideal for environments where device management may be limited or where installing agents is impractical.

This method contrasts with other options, such as the AnyConnect agent, which requires client-side installation and remains on the endpoint to provide ongoing posture assessment. Similarly, the Posture Script Remediation feature relies on scripts that typically remain part of the device environment to address compliance issues, while the Stealth Agent is a type of agent that operates in a less intrusive manner but does not fully remove itself post-assessment.