I work for a small telematics company and we received a request from one of our clients about integrating their vehicle GPS locations to their ArcGIS system. Our current system simply displays this location data on google maps through javascript. I'm not really familiar with GIS, but I began doing some digging. From the best I could grasp, I need to write a web service that their GIS server can access in order to add it to the maps. Our telematics system keeps everything in a database, and I could write a a web service that can access this data and send as whatever format (XML, json, csv, etc.). But of course, as I'm not familiar with how this all works, I was looking for a place to ask. Could any of your guys give a overall view of what process I should follow to put our GPS location data (latitude, longitude, address and other location information) and have it available as a layer for our client. Thanks for any help.