How to optimally service several thousands of delivery locations, all dependants on a particular distributive centre, is question where GIS tools and solutions could help again. An example of an effective solution is GDi GISDATA DIVERTON, an application for transport planning and optimization which enables detailed analysis of expenses and distribution profitability as well as dynamic modeling of the optimal routes for delivery vehicles. At first the computer models optimal routes and delivery schedules according to numerous criteria – of which the three most important are: route length, time/term of delivery and expenses for vehicles and drivers. Due to the fact that in many companies the process of deliveries is coincident with the prior selling process of the particular delivery place or whole region, DIVERTON system can be (and in many cases is) used for selling activities too.