Network discovery is the process of identifying all the devices, systems, and resources connected to a network. This includes both wired and wireless devices, servers, printers, routers, switches, and other network components. Network discovery helps IT professionals gain visibility into their network infrastructure and ensure that all devices are properly configured and secured. It also helps to identify any unauthorized devices or potential security vulnerabilities that need to be addressed. Overall, network discovery is an essential first step in network management and security.