A Network Interface is a hardware or software component that connects a computer or device to a network. It allows for communication between devices, enabling data transfer over wired or wireless connections. Common examples include Ethernet ports and Wi-Fi adapters, which facilitate connections to local area networks (LANs) or the internet. In addition to physical connections, network interfaces can also refer to software interfaces that manage network protocols. These interfaces help devices understand how to send and receive data, ensuring compatibility with various networking standards like TCP/IP and UDP.