A network is a collection of interconnected devices or systems that can communicate with each other. This can include computers, servers, and other hardware that share data and resources. Networks can be local, like a home Wi-Fi network, or global, like the Internet, which connects millions of devices worldwide. Networks can be classified into different types based on their size and purpose. For example, a Local Area Network (LAN) connects devices within a small area, while a Wide Area Network (WAN) covers larger distances. Networks enable efficient communication and resource sharing, making them essential in modern technology.