What functionality does VMware AppDefense provide?

VMware AppDefense is a security solution specifically designed to enhance the security posture of applications running in virtualized environments. Its primary functionality revolves around monitoring the behavior of applications to ensure they operate within defined norms and expectations. By observing the normal behavior of applications, AppDefense can detect and respond to any anomalies or deviations from established patterns. This proactive approach helps in identifying potential vulnerabilities, attacks, or unintended changes in the application’s behavior, thus providing a layer of security that focuses on the application layer rather than just the infrastructure.

In contrast, the other options describe functionalities that are not associated with AppDefense. Improving network performance pertains to optimizing data flow and reducing latency, which is not the focus of AppDefense. Tracking cloud costs and usage relates to financial management and resource allocation in the cloud, while facilitating user access across VMs deals with identity and access management. None of these features align with the primary security monitoring and response capabilities that AppDefense offers, making option C the accurate representation of its functionality.