ArcGIS Routing Service

The ArcGIS Routing service can be used to generate:

Driving directions
Service areas (drive-time areas)
Routes to closest facilities
A travel-time and travel-distance matrix from multiple origins to multiple destinations
A set of GPS track points snapped to the underlying roads

Resources describing the service and how to use it include:

ArcGIS REST API—Start here if you are a developer building your own application.
ArcGIS Online Help—Start here if you are a GIS user accessing the ArcGIS Routing service from the Map Viewer application.
ArcGIS Help—Start here if you are a GIS professional using the ArcGIS Routing service from ArcGIS Pro.
Network dataset coverage map—View the availability of road and traffic data for performing analyses.
Routing feedback—Provide suggestions or report issues related to the ArcGIS Routing service.

Notes: Services on logistics.arcgis.com provide batch (job) equivalents for most routing service types. You can also supplement your basemaps by adding the traffic map service from traffic.arcgis.com.