Virtual interfaces are software-based connections that allow different systems or applications to communicate without needing physical hardware. They enable users to interact with software programs, devices, or networks through a digital medium, making it easier to manage and control various functions. These interfaces can be found in many areas, such as computer networks, operating systems, and user applications. They help streamline processes by providing a consistent way to access features and data, enhancing user experience and efficiency in tasks like data transfer and device management.