A mesh network is a type of network topology where each device, or node, connects directly to multiple other nodes. This creates a web-like structure that allows data to be transmitted through various paths. If one node fails, the network can still function by rerouting data through other nodes, enhancing reliability and coverage. Mesh networks are commonly used in wireless communication, such as in Wi-Fi systems for homes and businesses. They can expand coverage in large areas, making them ideal for urban environments or outdoor events. This decentralized approach improves connectivity and reduces dead zones compared to traditional networks.