The Network Analyst extension has tools for creating and analyzing network datasets. A network dataset is a collection of linear features that are connected by nodes that allow for bi-directional flow. This means you can move in either direction along the lines within the network. Network datasets are normally associated with transportation-related networks such as roads, railroads, sidewalks, or bike paths. These are typically not used for utilities as those are normally single-direction flow networks.
With Network Analyst, you can calculate the best routes for vehicles, determine service areas based on drive time requirements, find nearest features within the network, and more. So, you might use this extension to help site a new fire station based on the drive time coverage of existing fire stations.
The Network Analyst extension for ArcGIS Pro currently includes 20 geoprocessing tools organized into three toolsets:
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