What does the “Virtual Domain” feature allow in FortiGate?

The "Virtual Domain" feature in FortiGate allows the creation of multiple independent virtual instances for resource management within a single FortiGate device. Each virtual domain operates as a separate unit with its own policies, logs, and administrative features, enabling organizations to segment their security infrastructure according to different business units, departments, or customer requirements.

This capability provides a flexible solution for managing resources efficiently. For example, an organization can assign different administrative domains to various teams, ensuring that each group has control over its own security policies and configurations while sharing the same physical hardware. This not only optimizes the use of resources but also simplifies management as each virtual domain can be customized to meet specific needs.

The other options, while related to network functionality and security management, do not accurately describe the primary purpose of the Virtual Domain feature. Bandwidth efficiency, traffic encryption, and application isolation can be managed through different FortiGate features and strategies, but they do not encapsulate the core functionality of virtual domains, which is primarily about resource management and operational independence within the same physical device.