Network connection refers to the physical or logical connections between different components or devices within a larger infrastructure. An infrastructure can include various systems such as network devices, servers, databases, storage systems, and other components that work together to provide a particular service or functionality.
For example, in an infrastructure diagram that depicts a data center, a line might connect a server to a storage device to represent the connection between the two components. Similarly, a line might connect a switch to a router to represent the connection between the network devices.